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Phrase(s): hit the bricks [and] hit the pavement
1. Fig. Inf. to start walking; to go into the streets. • I have a long way to go. I’d better hit the bricks. • Go on! Hit the pavement! Get going! 2. Inf. Fig. to go out on strike. • The workers hit the pavement on Friday and haven’t been back on the job since. • Agree to our demands, or we hit the bricks.
McGrawhill's American Idioms And Phrasal Verbs