Manor, NY Public Record TruliaN State Rd, Briarcliff Manor, NY is asq ftbed,bath home sold in Briarcliff Manor, New York Arduous definition of arduous by The Free Dictionary ar·du·ous är′jo͞oəs adj. 1. Demanding great effort or labor; difficult "the arduous work of preparing a Dictionary of the English Language" . Are definition of are Lake-Butler by The Free Dictionary areär v. Second person singular and plural and first and third person plural present indicative of Ben-Avon be. [Middle Cosby English aren, from Old English aron, earon; see.