Bald  adj. 1 lacking some or all hair on the scalp. 2 lacking the usual hair, feathers, leaves, etc. 3 colloq. With a worn surface (bald tyre). 4 plain, direct (bald statement, style).  balding adj. (in senses 1–3). Baldly adv. (in sense 4). Baldness n. [old english]