Y moth
Y Y (w[imac]), n.; pl. {Y's} (w[imac]z) or {Ys}. Something shaped like the letter Y; a forked piece resembling in form the letter Y. Specifically: (a) One of the forked holders for supporting the telescope of a leveling instrument, or the axis of a theodolite; a wye. (b) A forked or bifurcated pipe fitting. (c) (Railroads) A portion of track consisting of two diverging tracks connected by a cross track. [1913 Webster]

{Y level} (Surv.), an instrument for measuring differences of level by means of a telescope resting in Y's.

{Y moth} (Zo["o]l.), a handsome European noctuid moth {Plusia gamma}) which has a bright, silvery mark, shaped like the letter Y, on each of the fore wings. Its larva, which is green with five dorsal white species, feeds on the cabbage, turnip, bean, etc. Called also {gamma moth}, and {silver Y}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Y-moth — Y level and Y moth see under ↑Y (n). Yˈ moth noun Any of a genus of destructive noctuid moths with a silvery Y shaped mark on the forewings • • • Main Entry: ↑Y * * * Y moth see Y 3 b …   Useful english dictionary

  • y moth — noun Usage: usually capitalized Y Etymology: so called from its y shaped marking : silver y moth …   Useful english dictionary

  • silver y moth — noun Usage: capitalized Y Etymology: silver (II) + y + moth : a moth of the genus Plusia having a silvery Y on the fore wings; especially : gamma moth …   Useful english dictionary

  • silver Y moth — noun see gamma moth …   Useful english dictionary

  • Y — (w[imac]), n.; pl. {Y s} (w[imac]z) or {Ys}. Something shaped like the letter Y; a forked piece resembling in form the letter Y. Specifically: (a) One of the forked holders for supporting the telescope of a leveling instrument, or the axis of a… …   The Collaborative International Dictionary of English

  • Y level — Y Y (w[imac]), n.; pl. {Y s} (w[imac]z) or {Ys}. Something shaped like the letter Y; a forked piece resembling in form the letter Y. Specifically: (a) One of the forked holders for supporting the telescope of a leveling instrument, or the axis of …   The Collaborative International Dictionary of English

  • Y's — Y Y (w[imac]), n.; pl. {Y s} (w[imac]z) or {Ys}. Something shaped like the letter Y; a forked piece resembling in form the letter Y. Specifically: (a) One of the forked holders for supporting the telescope of a leveling instrument, or the axis of …   The Collaborative International Dictionary of English

  • Y-levelY-moth — Y level and Y moth see under Y (n) …   Useful english dictionary

  • Y-level — and Y moth see under ↑Y (n). Yˈ level noun A type of engineers level whose essential characteristic is the support of the telescope, namely, Y shaped rests in which it may be rotated or reversed end for end (also called wyeˈ level) • • • Main… …   Useful english dictionary

  • moth|y — «MTH ee, MOTH », adjective, moth|i|er, moth|i|est. infested by moths; moth eaten …   Useful english dictionary

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