A gesture, consisting of a twirling motion of a finger near the temple, used to suggest that another person is crazy.

Hyperopic; farsighted

(firearms) To align the sights of a firearm.

A particular sign language, used in Kenya.

plural of signal box

A building, typically adjacent to or spanning a railway line, from where signals, points and (sometimes) level crossings are controlled. / The alarm-box of a police or fire-alarm system.

A sign language, now extinct, which developed on Martha's Vineyard (an island in Massachusetts).

Superficially, without a full inspection.

(informal, humorous) A sigh of longing or disappointment.

A gesture made by placing the hand in the L shape near the forehead; used to signify that someone else is a loser.