Noun comma has 2 senses
  1. comma - a punctuation mark (,) used to indicate the separation of elements within the grammatical structure of a sentence
    --1 is a kind of
    punctuation, punctuation mark
  2. comma, comma butterfly, Polygonia comma - anglewing butterfly with a comma-shaped mark on the underside of each hind wing
    --2 is a kind of nymphalid, nymphalid butterfly, brush-footed butterfly, four-footed butterfly
    --2 is a member of Polygonia, genus Polygonia
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