pawl

pawl
[pɔːl]
noun
  1. a pivoted curved bar or lever whose free end engages with the teeth of a cogwheel or ratchet so that the wheel or ratchet can only turn or move one way
    (防逆转的)棘爪,推爪
    ■each of a set of short stout bars that engage with the whelps and prevent a capstan, windlass, or winch from recoiling
    (防止绞盘或起锚机逆转的)掣转杆
语源
  1. early 17th cent.: perhaps from Low German and Dutch pal (related to pal 'fixed')
英语宝典
考试词汇表