a small tower, usually one forming part of a larger structure.
a small tower at an angle of a building, as of a castle or fortress, frequently beginning some distance above the ground.
Also called turrethead
[tur-it-hed, tuhr-] /ˈtɜr ɪtˌhɛd, ˈtʌr-/ (Show IPA). a pivoted attachment on a lathe or the like for holding a number of tools, each of which can be presented to the work in rapid succession by a simple rotating movement.
Military. a domelike, sometimes heavily armored structure, usually revolving horizontally, within which guns are mounted, as on a fortification, ship, or aircraft.
Fortification. a tall structure, usually moved on wheels, formerly employed in breaching or scaling a fortified place, a wall, or the like.
c.1300, "small tower," from Old French touret (12c.), diminutive of tour "tower," from Latin turris (see tower). Meaning "low, flat gun-tower on a warship" is recorded from 1862, later also of tanks. Related: Turreted.