1 [C] a metal frame that is fixed to a child's teeth in order to make them straight （儿童使用的）牙齿矫正器
2braces(US 美 suspenders) [pl] a pair of straps that go over your shoulders to hold your trousers up （裤子的）背带
brace²
/breɪs ||; bres/verb [T] brace sth/yourself (for sth) to prepare yourself for sth unpleasant 作好准备（面对不愉快的事）: You'd better brace yourself for some bad news.你要作好接受坏消息的准备。