Noun thunnus has 1 sense
  1. Thunnus, genus Thunnus - tunas: warm-blooded fishes
    --1 is a kind of fish genus
    --1 is a member of Scombridae, family Scombridae
    --1 has members:
     tuna, tunny; bluefin, bluefin tuna, horse mackerel, Thunnus thynnus; yellowfin, yellowfin tuna, Thunnus albacares
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