1. 发现：catch one's death of cold 患致命的感冒 | catch one's eye 引起某人的注意 | catch out 发现

2. (棒球中)接杀; 抓住(某人)短处; (用手段)挫败(某人)：catch on [口]投合人心, 受人欢迎 理解, 明白 抓住 找到工作. | catch out (棒球中)接杀; 抓住(某人)短处; (用手段)挫败(某人) | catch sb. napping 乘人不备, 乘人不注意

3. 发觉,抓住某人的错处：catch one's word 听懂某人的话 | catch out 发觉,抓住某人的错处 | catch sight of 发现,瞥见

4. 发觉...有错误(或做坏事)：catch on 流行起来;懂得,理解 | catch out发觉...有错误(或做坏事) | catch up with 赶上

verb

1. trap
especially in an error or in a reprehensible act

e.g. He was caught out
She was found out when she tried to cash the stolen checks

Synonym: find out