/swɒb ||; swɑb/noun[C] 1 a piece of soft material used by a doctor, nurse, etc for cleaning a place where your body has been injured or cut, or for taking a substance from your body to test it 药签；拭子
2 an act of taking a substance from sb's body for testing, with a swab 用拭子取化验标本:
to take a throat swab 用拭子取喉道的化验标本
swab verb [T] (
present participle swabbing;past tense past participle swabbed)