Noun horse mackerel has 3 senses
- bluefin, bluefin tuna, horse mackerel, Thunnus thynnus - largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics
--1 is a kind of tuna, tunny
--1 is a member of Thunnus, genus Thunnus
--1 has parts: bluefin, bluefin tuna
- horse mackerel, saurel, Trachurus trachurus - large elongated compressed food fish of the Atlantic waters of Europe
--2 is a kind of scad
- horse mackerel, jack mackerel, Spanish mackerel, saurel, Trachurus symmetricus - a California food fish
--3 is a kind of scad
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