Wordnet 3.0
NOUN (1)
1. 
 air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure; 
- Example: "trees bent under the fierce winds"- Example: "when there is no wind, row"- Example: "the radioactivity was being swept upwards by the air current and out into the atmosphere"[syn: wind, air current, current of air]
WordNet (r) 3.0 (2006):
current of air
    n 1: air moving (sometimes with considerable force) from an area
         of high pressure to an area of low pressure; "trees bent
         under the fierce winds"; "when there is no wind, row"; "the
         radioactivity was being swept upwards by the air current
         and out into the atmosphere" [syn: wind, air current,
         current of air]