You use ~ to refer to a soft, sticky substance, especially if it is unpleasant. (BRIT INFORMAL)
He had painted the floors with some kind of black ~.
= gunk
N-UNCOUNT
You use ~ to refer to a soft, sticky substance, especially if it is unpleasant. (BRIT INFORMAL)
He had painted the floors with some kind of black ~.
= gunk
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012