Noun gasterosteus has 1 sense
  1. Gasterosteus, genus gasterosteus - type genus of the family Gasterosteidae
    --1 is a kind of fish genus
    --1 is a member of Gasterosteidae, family Gasterosteidae
    --1 has members:
     three-spined stickleback, Gasterosteus aculeatus; ten-spined stickleback, Gasterosteus pungitius
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