postman's knock

短语

词形变化

postman's knocks 复数 postman's knocks

释义与例句

n.
  1. 1.

    A double knock at the door to indicate the delivery of letters or telegrams.

    可数 不可数
  2. 2.

    Synonym of post office (“a party game involving the exchange of kisses”).

    不可数 可数