(medicine) unable to see clearly in low light; suffering from night blindness.

(medicine) The inability to see clearly in bright light; hemeralopia

(poker) The smaller of the forced bets, usually equivalent to half the minimum bet, depending on the variation of poker played. / (poker) The player forced to pay such a bet.

(poker) The larger of the forced bets, usually equivalent to the minimum bet. / (poker) The player forced to pay such a bet.

Used other than figuratively or idiomatically: see blind, alley. A street or passageway that leads nowhere. / (figuratively) A course of inquiry that leads nowhere.

(Internet) A copy of an email message that is sent to a person (often one of many) other than the primary recipient without the express knowledge of the other recipients.

To rob (someone) mercilessly.

(humorous) A mythical automotive material used either in jokes or to gauge how inept someone is in basic auto mechanics.

(geology) A type of thrust fault, which does not appear on the surface, being completely hidden underneath ductile surface rock layers

(Britain) A stereotype of a pompous, ex-military middle-aged man, conservative and opposed to new ideas.