Leaf beetle
Leaf Leaf (l[=e]f), n.; pl. {Leaves} (l[=e]vz). [OE. leef, lef, leaf, AS. le['a]f; akin to S. l[=o]f, OFries. laf, D. loof foliage, G. laub, OHG. loub leaf, foliage, Icel. lauf, Sw. l["o]f, Dan. l["o]v, Goth. laufs; cf. Lith. lapas. Cf. {Lodge}.] 1. (Bot.) A colored, usually green, expansion growing from the side of a stem or rootstock, in which the sap for the use of the plant is elaborated under the influence of light; one of the parts of a plant which collectively constitute its foliage. [1913 Webster]

Note: Such leaves usually consist of a blade, or lamina, supported upon a leafstalk or petiole, which, continued through the blade as the midrib, gives off woody ribs and veins that support the cellular texture. The petiole has usually some sort of an appendage on each side of its base, which is called the stipule. The green parenchyma of the leaf is covered with a thin epiderm pierced with closable microscopic openings, known as stomata. [1913 Webster]

2. (Bot.) A special organ of vegetation in the form of a lateral outgrowth from the stem, whether appearing as a part of the foliage, or as a cotyledon, a scale, a bract, a spine, or a tendril. [1913 Webster]

Note: In this view every part of a plant, except the root and the stem, is either a leaf, or is composed of leaves more or less modified and transformed. [1913 Webster]

3. Something which is like a leaf in being wide and thin and having a flat surface, or in being attached to a larger body by one edge or end; as: (a) A part of a book or folded sheet containing two pages upon its opposite sides. (b) A side, division, or part, that slides or is hinged, as of window shutters, folding doors, etc. (c) The movable side of a table. (d) A very thin plate; as, gold leaf. (e) A portion of fat lying in a separate fold or layer. (f) One of the teeth of a pinion, especially when small. [1913 Webster]

{Leaf beetle} (Zo["o]l.), any beetle which feeds upon leaves; esp., any species of the family {Chrysomelid[ae]}, as the potato beetle and helmet beetle.

{Leaf bridge}, a draw-bridge having a platform or leaf which swings vertically on hinges.

{Leaf bud} (Bot.), a bud which develops into leaves or a leafy branch.

{Leaf butterfly} (Zo["o]l.), any butterfly which, in the form and colors of its wings, resembles the leaves of plants upon which it rests; esp., butterflies of the genus {Kallima}, found in Southern Asia and the East Indies.

{Leaf crumpler} (Zo["o]l.), a small moth ({Phycis indigenella}), the larva of which feeds upon leaves of the apple tree, and forms its nest by crumpling and fastening leaves together in clusters.

{Leaf fat}, the fat which lies in leaves or layers within the body of an animal.

{Leaf flea} (Zo["o]l.), a jumping plant louse of the family {Psyllid[ae]}.

{Leaf frog} (Zo["o]l.), any tree frog of the genus {Phyllomedusa}.

{Leaf green}.(Bot.) See {Chlorophyll}.

{Leaf hopper} (Zo["o]l.), any small jumping hemipterous insect of the genus {Tettigonia}, and allied genera. They live upon the leaves and twigs of plants. See {Live hopper}.

{Leaf insect} (Zo["o]l.), any one of several genera and species of orthopterous insects, esp. of the genus {Phyllium}, in which the wings, and sometimes the legs, resemble leaves in color and form. They are common in Southern Asia and the East Indies.

{Leaf lard}, lard from leaf fat. See under {Lard}.

{Leaf louse} (Zo["o]l.), an aphid.

{Leaf metal}, metal in thin leaves, as gold, silver, or tin.

{Leaf miner} (Zo["o]l.), any one of various small lepidopterous and dipterous insects, which, in the larval stages, burrow in and eat the parenchyma of leaves; as, the pear-tree leaf miner ({Lithocolletis geminatella}).

{Leaf notcher} (Zo["o]l.), a pale bluish green beetle ({Artipus Floridanus}), which, in Florida, eats the edges of the leaves of orange trees.

{Leaf roller} (Zo["o]l.), See {leaf roller} in the vocabulary.

{Leaf scar} (Bot.), the cicatrix on a stem whence a leaf has fallen.

{Leaf sewer} (Zo["o]l.), a tortricid moth, whose caterpillar makes a nest by rolling up a leaf and fastening the edges together with silk, as if sewn; esp., {Phoxopteris nubeculana}, which feeds upon the apple tree.

{Leaf sight}, a hinged sight on a firearm, which can be raised or folded down.

{Leaf trace} (Bot.), one or more fibrovascular bundles, which may be traced down an endogenous stem from the base of a leaf.

{Leaf tier} (Zo["o]l.), a tortricid moth whose larva makes a nest by fastening the edges of a leaf together with silk; esp., {Teras cinderella}, found on the apple tree.

{Leaf valve}, a valve which moves on a hinge.

{Leaf wasp} (Zo["o]l.), a sawfly.

{To turn over a new leaf}, to make a radical change for the better in one's way of living or doing. [Colloq.] [1913 Webster]

They were both determined to turn over a new leaf. --Richardson. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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  • leaf beetle — noun brightly colored beetle that feeds on plant leaves; larvae infest roots and stems • Syn: ↑chrysomelid • Hypernyms: ↑beetle • Hyponyms: ↑flea beetle, ↑Colorado potato beetle, ↑Colorado beetle, ↑ …   Useful english dictionary

  • leaf beetle — noun a small beetle of a large group that are typically metallic in appearance and include some serious crop pests. [Family Chrysomelidae.] …   English new terms dictionary

  • leaf beetle — any of numerous, often brightly colored beetles of the family Chrysomelidae, that feed on the leaves of plants, the larvae of which infest the roots, stem, and leaves. [1850 55] * * * ▪ insect       any of approximately 25,000 species of beetles… …   Universalium

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  • List of leaf beetle (Chrysomelidae) species recorded in Britain — The following is a list of the leaf beetles recorded in Britain. For other beetle families, see the parent article List of beetle species recorded in Britain.ubfamily Bruchinae* Bruchus affinis Spanish bean beetle * Bruchus atomarius * Bruchus… …   Wikipedia

  • Cereal leaf beetle — Scientific classification Kingdom: Animalia Phylum …   Wikipedia

  • cereal leaf beetle — noun : a small reddish brown black headed Old World chrysomelid beetle (Oulema melanopus) that feeds on cereal grasses and is a serious pest of United States grain crops * * * an Old World leaf beetle, Oulema melanopus, introduced into North… …   Useful english dictionary

  • elm leaf beetle — noun : a small orange yellow black striped Old World chrysomelid beetle (Pyrrhalta luteola) that is long established in eastern No. America and is both as adult and larva a leaf eating pest on elm * * * a chrysomelid beetle, Galerucella luteola,… …   Useful english dictionary

  • elm leaf beetle — ☆ elm leaf beetle n. a beetle (Pyrrhalta luteola) that feeds on the leaves of elm trees while in both its larval and adult stages …   English World dictionary

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