From Longman Dictionary of Contemporary Englishdouble-bookˌdouble-ˈbook verb [intransitive, transitive] ATTto promise the same seat in a theatre, on a plane etc to more than one person by mistake —double-booking noun [uncountable]→ See Verb tableFrom Longman Business Dictionarydouble-bookˌdouble-ˈbook verb [transitive]TRAVEL to promise the same hotel room, seat in a theatre, table at a restaurant etc to more than one person by mistakeThe Grand was double-booked and had to offer us the first week at another hotel, which was, in our opinion, inferior. —double booking noun [countable, uncountable]There’s a problem over a double booking.→ See Verb table
