Submitted by Anonymous (not verified) on Thu, 10/26/2017 - 17:01 Lemma: roofNgram Count: 1Wordnet ID: 112627Starts with letter: YesIndefinite Article: aGoogle Ngram Count: 509750Sense count: 3Contained in other ngrams: 19Hierarchy: NounPresent ParticipleForms: roofedroofsForms Count: 2