adj. bald·er, bald·est
1. Lacking hair on the head.
2. Lacking a natural or usual covering: a bald spot on the lawn.
3. Lacking treads: a bald tire.
4. Zoology Having white feathers or markings on the head, as in some birds or mammals.
5. Lacking ornamentation; unadorned.
6. Undisguised; blunt: a bald statement of policy.
[Middle English balled, probably from bal, ball; see BALL1. Sense 4, perhaps partly of Celtic origin; akin to Welsh bal, having a white streak on the forehead (of horses), Irish ball, spot, mark, and English blaze, white mark on the face of an animal; see BLAZE2.]
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