prep. [ Pref. a- on + OE. baft, baften, biaften, AS. beæftan; be by + æftan behind. See After, Aft, By. ] (Naut.) Behind; toward the stern from; as, abaft the wheelhouse. [ 1913 Webster ]
Abaft the beam. See under Beam. [ 1913 Webster ]
adv. (Naut.) Toward the stern; aft; as, to go abaft. [ 1913 Webster ]