crank

中文： 民间科学家、民科、曲柄

1. A bent piece of an axle or shaft, or an attached arm perpendicular, or nearly so, to the end of a shaft or wheel, used to impart a rotation to a wheel or other mechanical device; also used to change circular into reciprocating motion, or reciprocating into circular motion. · I grind my coffee by hand with a coffee grinder with a crank handle.
2. The act of converting power into motion, by turning a crankshaft. · Yes, a crank was all it needed to start.· Give it a forceful crank.
3. Synonym of methamphetamine. (US, slang) · Danny got abscesses from shooting all that bathtub crank.
4. The penis. (slang)

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