| 单词 | tumbler |
| 释义 | tumbler /tum"bleuhr/, n. 1. a person who performs leaps, somersaults, and other bodily feats. 2. (in a lock) any locking or checking part that, when lifted or released by the action of a key or the like, allows the bolt to move. 3. a stemless drinking glass having a flat, often thick bottom. 4. (in a gunlock) a leverlike piece that by the action of a spring forces the hammer forward when released by the trigger. 5. Mach. a. a part moving a gear into place in a selective transmission. b. a single cog or cam on a rotating shaft, transmitting motion to a part with which it engages. 6. a tumbling box or barrel. 7. a person who operates a tumbling box or barrel. 8. one of a breed of dogs resembling a small greyhound, used formerly in hunting rabbits. 9. Also called roller. one of a breed of domestic pigeons noted for the habit of tumbling backward in flight. 10. a toy, usually representing a fat, squatting figure, that is weighted and rounded at the bottom so as to rock when touched. 11. a tumbrel or tumble cart. [1300-50; ME: acrobat; see TUMBLE, -ER1. Compare LG tümeler drinking-cup, kind of pigeon] |
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