hollow+cylinder
31Syringe — A device used in medicine to inject fluid into or withdraw fluid from the body. Medical syringes consist of a needle attached to a hollow cylinder that is fitted with a sliding plunger. The downward movement of the plunger injects fluid; upward… …
32gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …
33Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry …
34Orbiting Frog Otolith — A bullfrog (Rana catesbeiana), the species which travelled on the OFO A flight The Orbiting Frog Otolith (OFO) spacecraft …
35Pipe (fluid conveyance) — For structural pipe, see Hollow structural section. For other uses, see Pipe (disambiguation). Steel pipes …
36roller — I roll•er [[t]ˈroʊ lər[/t]] n. 1) one that rolls 2) a cylinder, wheel, or caster on which something is rolled along 3) a cylinder revolving on a fixed axis, esp. to aid the movement of something passed over or around it 4) a cylinder on which… …
37Barrel — Bar rel (b[a^]r r[e^]l), n.[OE. barel, F. baril, prob. fr. barre bar. Cf. {Barricade}.] 1. A round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads; as, a… …
38Barrel bulk — Barrel Bar rel (b[a^]r r[e^]l), n.[OE. barel, F. baril, prob. fr. barre bar. Cf. {Barricade}.] 1. A round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads;… …
39Barrel drain — Barrel Bar rel (b[a^]r r[e^]l), n.[OE. barel, F. baril, prob. fr. barre bar. Cf. {Barricade}.] 1. A round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads;… …
40Barrel of a boiler — Barrel Bar rel (b[a^]r r[e^]l), n.[OE. barel, F. baril, prob. fr. barre bar. Cf. {Barricade}.] 1. A round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads;… …
