The characteristic call of a domestic turkey is called a gobble.
A gobble is a loud, rapid vocalization produced most famously by male turkeys, called toms or gobblers. It is especially associated with courtship and territorial signaling during the breeding season, although males may also gobble in response to disturbances or other sounds.
Female turkeys, called hens, usually produce a broader range of sounds, including yelps, clucks, and purrs. The gobble is therefore not simply the universal voice of every turkey. Young birds also develop different calls as they mature.
Turkeys belong to the pheasant family, Phasianidae, rather than being closely related to chickens in the way everyday language sometimes suggests. Their vocal repertoire is much richer than the single word “gobble” implies, and wild turkeys can communicate with calls over considerable distances in forests and open country.