Definition of bait-ad

advertisement that offers retail merchandise at an alluringly low price to entice buyers to a store; also called bait-and-switch advertisement. In actuality, the customer may find it difficult, if not impossible, to purchase the advertised merchandise because it is the retailer's intention (1) to get the buyer to the store and then (2) to switch him or her to something more costly. Retailers that consistently use bait advertising are subject to legal action by the Federal Trade Commission, as this practice is considered false or deceptive advertising.