knock boots in English dictionary knock boots Meanings and definitions of "knock boots" (vulgar, slang) To have sexual intercourse. verb (slang, euphemistic) To have sexual intercourse. more Grammar and declension of knock boots to knock boots ( third-person singular simple present knocks boots, present participle knocking boots, simple past and past participle knocked boots) knock boots (third-person singular simple present knocks boots, present participle knocking boots, simple past and past participle knocked boots) more Sample sentences with "knock boots" Declension Stem Match words all exact any Try again Authors