bumping /ˈbʌmpɪŋ/noun 3adjective 1forms 3 noun3 •The sound or action of a bump.There was nothing to be seen, but he could hear loud thumpings and bumpings which seemed to come from the back of the house. — 1941 •The violent boiling when a homogeneous liquid is superheated to the point that the bubbles are formed at pressure greater than atmospheric pressure and be expelled from the container •Form of racing for coxed fours traditional at Oxford and Cambridge Universities; bumps race adjective1 •(informal) Rocking, excellent, great. formsbumpings · more bumping · most bumping