(~s)
A ~ is a four-sided shape whose corners are all ninety degree angles. Each side of a ~ is the same length as the one opposite to it.
N-COUNT
(~s)
A ~ is a four-sided shape whose corners are all ninety degree angles. Each side of a ~ is the same length as the one opposite to it.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012