(~s)
A ~ is a person whose job is to put together, adjust, or install machinery or equipment.
George was a ~ at the shipyard.
N-COUNT
(~s)
A ~ is a person whose job is to put together, adjust, or install machinery or equipment.
George was a ~ at the shipyard.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012