lavatory Get Printable Handwriting (lav-a-to-ry) 4 syllables Rhymes Learn It! Spelling Test Definition noun. 1 a room with sinks and toilets. 2 a sink or basin for washing or bathing. It usually has running water. Example Sentence He went to the lavatory . Synonyms toilet; bath; wash room Antonyms kitchen Rhymes Four Syllable Rhymes (1) lavatory Share with your friends: