| 单词 | tumbler |
| 释义 | Word Frequency tumbler(ˈtʌmblə) noun 1. a. a flat-bottomed drinking glass with no handle or stem. Originally, a tumbler had a round or pointed base and so could not stand upright b. Also called: tumblerful the contents or quantity such a glass holds 2. a person, esp a professional entertainer, who performs somersaults and other acrobatic feats 3. another name for tumble dryer 4. Also called: tumbling box a pivoted box or drum rotated so that the contents (usually inferior gemstones) tumble about and become smooth and polished 5. the part of a lock that retains or releases the bolt and is moved by the action of a key 6. a lever in a gunlock that receives the action of the mainspring when the trigger is pressed and thus forces the hammer forwards 7. a. a part that moves a gear in a train of gears into and out of engagement b. a single cog or cam that transmits motion to the part with which it engages 8. a toy, often a doll, that is so weighted that it rocks when touched 9. (often capital) a breed of domestic pigeon kept for exhibition or flying. The performing varieties execute backward somersaults in flight |
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