no kidding!; is that so? (sometimes used sarcastically in response to the obvious)

(computing) A feature of certain computer keyboards where a pressed key remains depressed and actuated until it is pressed again.

(pharmacology) An anxiolytic drug.

(nautical) A pitchmeter, especially on a ship. / (baseball) A device used in baseball to measure the speed of a pitch or the time a pitcher spends between pitches thrown.