Albacore \Al"ba*core\, n. (Zool.)
A name applied to several large fishes of the Mackerel family
({Scombridae}), esp. {Thunnus alalunga} (formerly {Orcynus
alalonga}); it is a type of tuna or tunny. The name has been
also applied to a larger related species, {Thunnus thynnus}
(formerly {Orcynus thynnus}), common in the Mediterranean and
Atlantic, which is called in New England the {horse
mackerel}. [formerly spelled {albicore}.]
[1913 Webster +PJC]