Source : Webster's Revised Unabridged Dictionary (1913)

Draughty \Draught"y\, a.
   Pertaining to a draught, or current of air; as, a draughtly,
   comfortless room.

Source : WordNet®

draughty
     adj : not airtight [syn: {drafty}]
     [also: {draughtiest}, {draughtier}]