linchpin
n.
also linch-pin, late 14c., earlier linspin, from Middle English lins "axletree" (see linch) + pin, n.. The peg that holds a wheel on an axle; now mainly figurative.
词汇 | linchpin |
词根词缀 | Online Etymology Dictionary linchpin n. also linch-pin, late 14c., earlier linspin, from Middle English lins "axletree" (see linch) + pin, n.. The peg that holds a wheel on an axle; now mainly figurative. |
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