Noun greenhood has 1 sense
  1. helmet orchid, greenhood - any of numerous orchids of the genus Pterostylis having leaves in a basal rosette and green flowers often striped purple or brown or red with the dorsal sepal incurved to form a hood
    --1 is a kind of orchid, orchidaceous plant
    --1 is a member of Pterostylis, genus Pterostylis
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