pawl

名词 pawl:

1. a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
   同义词：detent, click, dog

pawl

n.（名词）
A hinged or pivoted device adapted to fit into a notch of a ratchet wheel to impart forward motion or prevent backward motion.
掣爪，棘爪：一种枢轴或转轴器械，能与齿轮缺口或齿间吻合来前进或防止后移

来源：
Probably from Dutch pal
可能源自 荷兰语 pal
from Latin p3lus [stake] * see pag-
源自 拉丁语 p3lus [桩，支柱] *参见 pag-