Air cock

Air´ cock`

A faucet to allow escape of air.

A small valve installed in a piping system or on a piece of equipment to drain it or to release air pockets.

随便看

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。