The Oxford Thesaurus An A-Z Dictionary of Synonyms - slipэ n.

1) piece, scrap, strip, sliver; paper, note, chit, permit, permission, pass, document: I'll put my phone number on this slip of paper. To go on the outing, each child will have to bring in a slip signed by a parent. 2) shoot, scion, cutting, sprig, twig, sprout, runner, offshoot: After the slip is inserted, the branch must be bandaged up firmly.