in early Ireland, the elected heir of a living Celtic chief in a system limiting the choice to the chief's kin
Origin of tanistIrish and amp; Gaelic tānaiste, next heir, hence lord of a country, literally , second, parallel ; from Old Irish tān, estate
The heir apparent to an ancient Celtic chief, elected during the chief's lifetime.
Origin of tanistIrish Gaelic tánaiste, second, tanist, from Old Irish tánaise; see sed- in Indo-European roots.
- The heir presumptive to a Celtic clan.
From Irish tÃ¡naiste (“second-in-command").