To lock someone up in prison indefinitely.

(US) Indicates that the speaker has lost his or her keys.

(UK) Indicates that the speaker has lost his or her keys.

(computing, etc.) A set of keys used to operate a typewriter, computer etc.

(intransitive) To type on a computer keyboard.

(architecture) The top stone of an arch. / Something on which other things depend for support. / A native or resident of the American state of Pennsylvania.

(transitive) To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.

(medicine) Surgery using a fibre-optic laparoscope through a small incision, either for examination or treatment

The hole in a lock where the key is inserted and turns. / Any small opening resembling the hole for a key in shape or function.

(firearms) To strike a target after wobbling in flight so that the long axis of the bullet does not follow the line of flight, typically due to insufficient spin resulting from the rifling in the barrel.