Minor knock (4)
I believe the answer is:
bump
(Other definitions for bump that I've seen before include "Small swelling" , "Collide - protuberance" , "Swelling caused by a blow perhaps" , "Slight collision" , "Collide with force or violence" .)
I believe the answer is:
bump
(Other definitions for bump that I've seen before include "Small swelling" , "Collide - protuberance" , "Swelling caused by a blow perhaps" , "Slight collision" , "Collide with force or violence" .)