Source : Webster's Revised Unabridged Dictionary (1913)

Aweigh \A*weigh"\, adv. [Pref. a- + weigh.] (Naut.)
   Just drawn out of the ground, and hanging perpendicularly;
   atrip; -- said of the anchor. --Totten.

Source : WordNet®

aweigh
     adj 1: (used of an anchor) hanging clear of the bottom; "anchors
            aweigh"
     2: of an anchor; just clear of the bottom [syn: {atrip}]