词典释义：
释义
n.
a claw, especially one belonging to a bird of prey
（尤指猛禽类的）爪。
the shoulder of a bolt against which the key presses to slide it in a lock
琐簧肩状突出物。
(in various card games)the cards remaining undealt
（在各种纸牌游戏中）没发完的牌。
a printed form attached to a bearer bond that enables the holder to apply for a new sheet of coupons when the existing coupons have been used up
（附在债券上的）息票调换卷。
an ogee moulding S
形模制件。
词源
"late Middle English （denoting any heel-like part or object）： from Old French, literally ‘heel'， from Latin
