The Collaborative International Dictionary of English v.0.48:
loss leader \loss leader\ n. an article of merchandise sold at a loss in order to draw customers. Syn: drawing card, loss leader, leader. [WordNet 1.5]WordNet (r) 3.0 (2006):
loss leader n 1: a featured article of merchandise sold at a loss in order to draw customers [syn: drawing card, loss leader, leader]