a. [ Compar. Sleepier superl. Sleepiest. ] [ AS. sl&unr_;pig. See Sleep, n. ] 1. Drowsy; inclined to, or overcome by, sleep. Shak. [ 1913 Webster ]
She waked her sleepy crew. Dryden. [ 1913 Webster ]
2. Tending to induce sleep; soporiferous; somniferous; as, a sleepy drink or potion. Chaucer. [ 1913 Webster ]
3. Dull; lazy; heavy; sluggish. Shak. [ 1913 Webster ]
'Tis not sleepy business;
But must be looked to speedily and strongly. Shak. [ 1913 Webster ]
4. Characterized by an absence of watchfulness; as, sleepy security. [ 1913 Webster ]
Sleepy duck (Zool.), the ruddy duck. [ 1913 Webster ]