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Noun: thistle  thi-sul
  1. Any of numerous plants of the family Compositae and especially of the genera Carduus and Cirsium and Onopordum having prickly-edged leaves

Derived forms: thistles

Type of: weed

Part of: aster family, Asteraceae, Compositae, family Asteraceae, family Compositae

Encyclopedia: Thistle, Ut