(~s)
A ~ is a substance or object that covers something and protects it.
...the outer ~s of missiles.
N-COUNT: oft supp N
(~s)
A ~ is a substance or object that covers something and protects it.
...the outer ~s of missiles.
N-COUNT: oft supp N
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012