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general::
Phrase(s): 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., Phrase(s): 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., Phrase(s): 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.
McGrawhill's American Idioms And Phrasal Verbs