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Phrase(s): trace over something
1. to draw over something lightly. • Trace over the drawing to make it a little darker. • I had to trace over it twice to make it visible. 2. to copy something by placing a thin sheet of paper over it and drawing an outline of the thing to be copied. • Trace over this picture and then photocopy about ten copies for us all. • This needs to be traced over again.
McGrawhill's American Idioms And Phrasal Verbs