hassock Syllabification: (has·sock)Pronunciation: /ˈhasək/Translate hassock | into Italian Definition of hassock noun 1a thick, firmly padded cushion, in particular. a footstool. chiefly British a cushion for kneeling on in church. 2a firm clump of grass or matted vegetation in marshy or boggy ground. Origin: Old English hassuc (hassock (sense 2)), of unknown originhassock in other Oxford dictionaries Definition of hassock in the British & World English dictionary