(~s)
A ~ is an electric device that makes a bell ring loudly if someone tries to enter a building by force.
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(~s)
A ~ is an electric device that makes a bell ring loudly if someone tries to enter a building by force.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012