Noun river gum has 1 sense
  1. river red gum, river gum, Eucalyptus camaldulensis, Eucalyptus rostrata - somewhat crooked red gum tree growing chiefly along rivers; has durable reddish lumber used in heavy construction
    --1 is a kind of eucalyptus, eucalypt, eucalyptus tree
    --1 has substances: eucalyptus gum, eucalyptus kino, red gum
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