Noun american gentian has 1 sense
  1. columbo, American columbo, deer's-ear, deer's-ears, pyramid plant, American gentian - any of various tall perennial herbs constituting the genus Frasera; widely distributed in warm dry upland areas of California, Oregon, and Washington
    --1 is a kind of herb, herbaceous plant
    --1 is a member of Frasera, genus Frasera
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