Wordnet 3.0
VERB (1)
1. 
 be in motion due to some air or water current; 
- Example: "The leaves were blowing in the wind"- Example: "the boat drifted on the lake"- Example: "The sailboat was adrift on the open sea"- Example: "the shipwrecked boat drifted away from the shore"[syn: float, drift, be adrift, blow]
WordNet (r) 3.0 (2006):
be adrift
    v 1: be in motion due to some air or water current; "The leaves
         were blowing in the wind"; "the boat drifted on the lake";
         "The sailboat was adrift on the open sea"; "the shipwrecked
         boat drifted away from the shore" [syn: float, drift,
         be adrift, blow]