A simplified drawing of a smiling face, using two dots for the eyes and an arc for the mouth. / (rare) A smiley.

(military) An abrupt turn to face the opposite direction. / A reversal in direction; a reversal of attitude or opinion.

(intransitive) To turn 180 degrees to face the opposite direction. / To change opinion or attitude drastically.

(mathematics) A prime number that is one more or one less than a factorial. For example, 7 is a factorial prime, since 3! + 1 = 7.

(mathematics, combinatorics) The result of multiplying a given number of consecutive integers from 1 to the given number. In equations, it is symbolized by an exclamation mark (!). For example, 5! = 1 × 2 × 3 × 4 × 5 = 120.

(mathematics) Of or pertaining to a factor or factorial. / Of or pertaining to a factor, a kind of business agent. / (dated) Of or pertaining to a factory.

(chiefly US) The academic staff at schools, colleges, universities or not-for-profit research institutes, as opposed to the students or support staff. / A division of a university.

(idiomatic, cricket) To turn the face of the bat inwards, in order to hit the ball to the leg side.

Hair on the face of a human, such as the eyebrows of a man or woman or the androgenic hair (beard or moustache) of a man. / Hair on the face of an animal.

A barn owl, Tyto alba.