(~s)
An ~ is a material that insulates something.
Fat is an excellent ~ against the cold.
N-COUNT: usu sing
(~s)
An ~ is a material that insulates something.
Fat is an excellent ~ against the cold.
N-COUNT: usu sing
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012