A booth is a temporary table, tent, or area that you set up in order to sell something. You might have a cupcake booth at a school craft fair, for example.
You might stop at an information booth in a tourist town, or or shop for records at a music booth in your local flea market. You can use the noun booth for any small, impermanent stall, kiosk, or stand. Another kind of booth is the cozy, private seating area at a restaurant that often has high walls and benches around a table. Booth has an Old Norse origin, the word buth, which is rooted in búa, or "dwell."