outside door out·si·de·door uncommon noun 1. a doorway that allows entrance to or exit from a building Synonymsexterior dooroutside door Related words Broader terms doorway Narrower terms back doorDutch doorfront doorside door Parts building Part of doorknobdoorlockhingepaneling WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
