1 firm sharp sound
ADJ. loud, sharp | gentle, light | determined | timid
VERB + KNOCK hear | answer She hurried to answer the knock at the door.
PHRASES a knock at/on the door There was a loud knock at the door.
2 sharp blow from sth
ADJ. hard, nasty, severe (figurative) the hard knocks of life | minor
VERB + KNOCK get, have, take You've had a nasty knock on the head. (figurative) Their pride took quite a knock when they lost 5?0. | give sb/sth
PREP. ~ on
ADV. accidentally I accidentally knocked the vase off the table. | about, aside, over Her boyfriend had been knocking her about. Mind you don't knock that glass over.
PREP. against The stick knocked against the wall. | off He had knocked one of the pictures off the wall. | on I knocked my head on one of the beams.
PHRASES knock sb/sth flying He was knocked flying as two policemen came crashing through the door. | knock sb off their feet The explosion knocked him off his feet. | knock sb out/senseless/unconscious The blow knocked him unconscious. | knock sb to the ground
2 bang on a door
ADV. loudly | softly | politely, timidly
PREP. at Someone knocked loudly at the door. | on She knocked timidly on the study door and entered.
PHRASES without knocking Dobson walked straight into her office without knocking.