mousing noun 4adjective 1forms 3 noun4 •The act of hunting mice (or similar prey), especially by pouncing on them from above. •Use of the mouse •A turn or lashing of spun yarn or small stuff, or a metallic clasp or fastening, uniting the point and shank of a hook to prevent its unhooking or straightening out. •A ratchet movement in a loom. adjective1 •Impertinently inquisitive; prying; meddlesome.mousing saints — 1692 formsmousings · more mousing · most mousing