blind / blīnd/ • adj. 1. unable to see; sightless: she suffered from glaucoma, which has left her completely blind. ∎  (of an action, esp. a test or experiment) done without being able to see or without being in possession of certain information; compare with double blind: a blind tasting of eight wines. ∎  Aeron. (of flying) using instruments only: blind landings during foggy conditions.2. lacking perception or discernment: he's absolutely blind where you're concerned, isn't he? ∎  (blind to) unwilling or unable to appreciate or notice something apparent to others: she was blind to the realities of her position. ∎  (of an action or state of mind) not controlled by reason or judgment: they left in blind panic.3. concealed or closed, in particular: ∎  (of a corner or bend in a road) impossible to see around: two trucks collided on a blind curve in the road.• v. [tr.] 1. cause (someone) to be unable to see, permanently or temporarily: the injury temporarily blinded him.2. (be blinded) deprive (someone) of understanding, judgment, or perception: a clever tactician blinded by passion. ∎  (blind someone with) confuse or overawe someone with something difficult to understand: they try to blind you with science.• n. 1. [as pl. n.] (the blind) people who are unable to see: guide dogs for the blind.2. an obstruction to sight or light, in particular: ∎  a screen for a window, esp. one on a roller or made of slats: she pulled down the blinds.3. [in sing.] something designed to conceal one's real intentions: he phoned again from his own home: that was just a blind for his wife. ∎  a camouflaged shelter used by hunters to get close to wildlife: a duck blind.• adv. without being able to see clearly: he was the first pilot in history to fly blind. ∎  without having all the relevant information; unprepared: he was going into the interview blind.PHRASES: (as) blind as a bat inf. having very bad eyesight.blind drunk inf. extremely drunk.rob (or steal) someone blind inf. rob or cheat someone in a comprehensive or merciless way.turn a blind eye pretend not to notice.DERIVATIVES: blind·ness n.