\Sleep"y\, a. [Compar. {Sleepier}; superl. {Sleepiest}.]
[AS. sl?pig. See {Sleep}, n.]
1. Drowsy; inclined to, or overcome by, sleep. --Shak.
         She waked her sleepy crew.            --Dryden.
2. Tending to induce sleep; soporiferous; somniferous; as, a
   sleepy drink or potion. --Chaucer.
3. Dull; lazy; heavy; sluggish. --Shak.
         'Tis not sleepy business; But must be looked to
         speedily and strongly.                --Shak.
4. Characterized by an absence of watchfulness; as, sleepy
   security.
{Sleepy duck} (Zo["o]l.), the ruddy duck.