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Phrase(s): run down some lines
1. Sl. to converse (with someone). • I was running down some lines with Fred when the bell rang. • Hey, man, let’s run down some lines. 2. Sl. to try to seduce someone; to go through a talk leading to seduction. • Go run down some lines with someone else. • I was just standing there running down some lines with Mary when those guys broke in.
McGrawhill's American Idioms And Phrasal Verbs