cotter

名词 cotter:

1. a peasant farmer in the Scottish highlands
   同义词：cottar
2. a medieval English villein
   同义词：cottier
3. fastener consisting of a wedge or pin inserted through a slot to hold two other pieces together
   同义词：cottar

cot.ter

n.（名词）
A bolt, wedge, key, or pin inserted through a slot in order to hold parts together.
制销；锁销：用以使各部分连在一起的插在狭槽里的栓、楔子、钥匙或销子
A cotter pin.
扁销，开尾销

来源：
[Origin unknown]
[词源不明]