› COMMERCE a period when a store is selling things at lower prices than usual: have a sale a mid-season sale the January/July salesin the sale(s) I got a new coat for $50 in the sales.
› an occasion when a particular type of product is being sold: The library has a book sale every year. a sale of Oriental carpets
on sale › available to buy: Tickets are on sale now! Everything goes on sale as soon as the doors open. › being sold for a lower price than usual: All their men's clothing is on sale this week.