Noun rainbow smelt has 2 senses
  1. American smelt, rainbow smelt - common smelt of eastern North America and Alaska
    --1 is a kind of smelt
    --1 is a part of rainbow smelt, Osmerus mordax
  2. rainbow smelt, Osmerus mordax - important marine and landlocked food fish of eastern North America and Alaska
    --2 is a kind of smelt
    --2 is a member of Osmerus, genus Osmerus
    --2 has parts: American smelt, rainbow smelt
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