knock
knock verb uk/nɒk/ us knock verb(HIT)
B1 to hit something or someone and make them move or fall down
сбивать, опрокидывать
He accidentally knock ed the vase off the table. I knock ed over the mug. He was knock ed unconscious by the blast. knock verb
(NOISE)
a sudden short noise made when something or someone hits a surface
стук
a knock at/on the door knock noun [C]