vestibulenoun · Level 3 SAT1a large entrance or reception room or areaGuests gathered in the vestibule while the host prepared the dining room for the evening's dinner party.ModuleLevel 3RegisteracademicCollectionCollection 098SAT Complete planAlso in Collection 098antagonise, apophthegm, audacity, philippic, rabble-rouser, coronach, cerulean, foment and 1 more