| 单词 | fulcrum |
| 释义 | fulcrum /fool"kreuhm, ful"-/, n. , pl. fulcrums, fulcra /-kreuh/, v. n. 1. the support, or point of rest, on which a lever turns in moving a body. 2. any prop or support. 3. Zool. any of various structures in an animal serving as a hinge or support. v.t. 4. to fit with a fulcrum; put a fulcrum on. [1665-75; < L: back-support of a couch, appar. for fulctrum, equiv. to fulc(ire) to hold up, support + -trum n. suffix of instrument] |
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