Has"sock (?), n. [Scot. hassock, hassik, a besom, anything bushy, a large, round turf used as a seat, OE. hassok sedgy ground, W. hesgog sedgy, hesg sedge, rushes; cf. Ir. seisg, and E. sedge.]
A rank tuft of bog grass; a tussock.
A small stuffed cushion or footstool, for kneeling on in church, or for home use.
And knees and hassocks are well nigh divorced.
© Webster 1913.