intj. (nautical).Hold! Stop! Stay!
1681. OTWAY, The Soldiers Fortune, iv. i. Hoa up, hoa up; so, AVAST there, sir.
1748. SMOLLETT, Roderick Random, xli. AVAST there, friend: none of your tricks upon travellers. Ibid. (1751), Peregrine Pickle, xcvii. And upon this scrap of paperno, AVASTthats my discharge from the parish.
1883. W. C. RUSSELL, Sailors Language, s.v. AVAST. An order to stop hauling or heaving; pronounced vast. A word going out of fashion as used among seamen, who would formerly say Vast there! meaning, Stop that talking. It is now confined to ships work. Ibid. (1884), Jacks Courtship, xiv. But AVAST now! weve had enough of philosopherising.