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3. knock against

knock against

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knock against someone or something

to bump against someone or something. Mickey knocked against Mary and said he was sorry. I didn't mean to knock against your sore knee.

See also: knock

knock something against something

to strike something against something. He knocked a chair against the table and tipped both pieces of furniture over. A chair was knocked against the table, upsetting a vase.

See also: knock

knock (up) against someone or something

to bump against someone or something. The loose shutter knocked up against the side of the house. The large branch knocked against the garage in the storm.

See also: knock