uk /pɪn/ us /pɪn/pin

a small thin piece of metal with a point at one end, especially used for temporarily holding pieces of cloth together

(尤指用于固定布料用的)别针，大头针

I'll keep the trouser patch in place with pins while I sew it on.

在把裤子的补丁缝上去时，我会用别针把它固定好。

a decorative object, used as jewellery

饰针；胸针