guard's van
From Longman Dictionary of Contemporary EnglishRelated topics: Trains & railwaysguard's vanˈguard’s van noun [countable] British EnglishTTT the part of a train where the person in charge of it travels SYN caboose American EnglishExamples from the Corpusguard's van• I turned round and looked through into the guard's van.• Three compartments next to the guard's van were kept for the use of fare paying passengers.