Adjective ornamental has 1 sense
  1. cosmetic, decorative, ornamental - serving an esthetic rather than a useful purpose; "cosmetic fenders on cars"; "the buildings were utilitarian rather than decorative"
    Antonym: functional (indirect, via nonfunctional)
,Noun ornamental has 1 sense
  1. ornamental - any plant grown for its beauty or ornamental value
    --1 is a kind of
    plant, flora, plant life
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