名詞 fulcrum:

1. the pivot about which a lever turns

1. A member, such as a beam, that projects beyond a fulcrum and is supported by a balancing member or a downward force behind the fulcrum.
   懸臂，支架伸在支點之外的一個構(gòu)件，如一段橫梁，由與其持平衡的或向下的在支點后面的一個力支撐

ful.crum

n.（名詞）
【復數(shù)】 ful.crums 或 ful.cra [-kr…]
The point or support on which a lever pivots.
支點：杠桿的支點或支軸
Zoology An anatomical structure that acts as a hinge or a point of support.
【動物學】 轉(zhuǎn)節(jié)：解剖學上用作支點或轉(zhuǎn)節(jié)的結(jié)構(gòu)
An agent through which vital powers are exercised.
支柱，支持物：生命力賴以釋放的動原

來源：
Latin [bedpost]
拉丁語 [床栓]
from fulcore [to support]
源自 fulcore [支撐]