Определение curve ball в Английский Язык Английский Язык словарь
ball which crosses the plate on the opposite side than the side it was pitched from (Baseball); something that is unexpected or something that comes in an unexpected way; hard ball, something which is extremely tricky (Slang)
{i} ball which crosses the plate on the opposite side than the side it was pitched from (Baseball); something that is unexpected or something that comes in an unexpected way