pinhead
noun [ C ] uk/ˈpɪn.hed/ us/ˈpɪn.hed/
(OF PIN)
(大头针等的)针头,钉头
the very small round end of a pin
The problem was caused by a hole no larger than a pinhead. 故障是由大头针大小的一个洞引起的。
(PERSON)
informal傻瓜,笨蛋
a stupid person