Entry 2 senses · 2 variants Webster, 1913 Roomful /ro͞om'-fo͝olˌ/ · Room·ful · IPA /rˈuːmfˌʊl/ a. n. 01 a. Abounding with room or rooms; roomy. 1. Abounding with room or rooms; roomy.[R.] 02 n. As much or many as a room will hold; as, a roomful of men. pl. Roomfuls 1. As much or many as a room will hold; as, a roomful of men.