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brad /bræd/ noun [countableC] American EnglishAmE 1. DTa small metal object like a button with two metal sticks that are put through several pieces of paper and folded down to hold the papers together 圆形纸夹
2. a small thin wire nail with either a small head or a part that sticks out to the side instead of a head 角钉,无头钉,曲头钉