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Phrase(s): crash something together
to bring things together with great force, making a loud noise. • Fred crashed the cymbals together and the sound could have wakened the dead. • Don’t crash those pans together. It drives me crazy., Phrase(s): crash together
to ram or move together with great force. • The two cars crashed together, making a loud noise. • The ships crashed together, opening a gaping hole in the side of one of them.
McGrawhill's American Idioms And Phrasal Verbs