Shop at Best Buy for computers and tablets. Find laptops, desktops, all-in-one computers, monitors, tablets and more. 1. Something bought or for sale; a purchase. 2. An act of purchasing: a drug buy. 3. Something that is underpriced; a bargain. Buy or sell new and used items easily on Facebook Marketplace, locally or from businesses. Find great deals on new items shipped from stores to your door. BUY definition: 1. to get something by paying money for it: 2. to pay someone so that they do what you want or do…. Learn more. Marketplace: Buy and sell locally with ease. List items fast, chat with buyers, and find great deals using our location-based mobile app today. Official website for Costsco Wholesale. Shop by departments, or search for specific item(s). BUY definition: to acquire the possession of, or the right to, by paying or promising to pay an equivalent, especially in money; purchase. See examples of buy used in a sentence. The meaning of BUY is to acquire possession, ownership, or rights to the use or services of by payment especially of money : purchase. How to use buy in a sentence. Use the Best Buy store locator to find stores in your area. Then, visit each Best Buy store's page to see store hours, directions, news, events and more. 1 real estate site REALTOR® agents recommend* Buy Rent Sell Pre-approval Just sold Home value.