The Collaborative International Dictionary of English v.0.48:
Dozy \Doz"y\, a. Drowsy; inclined to doze; sleepy; sluggish; as, a dozy head. --Dryden. [1913 Webster]WordNet (r) 3.0 (2006):
dozy adj 1: half asleep; "made drowsy by the long ride"; "it seemed a pity to disturb the drowsing (or dozing) professor"; "a tired dozy child"; "the nodding (or napping) grandmother in her rocking chair" [syn: drowsy, drowsing(a), dozy]