Bull thistle Meaning, Definition & Usage

  1. noun European thistle with rather large heads and prickly leaves; extensively naturalized as a weed in the United States
    Cirsium vulgare; spear thistle; boar thistle; Cirsium lanceolatum.

WordNet


Definitions
  1. Cnicus lanceolatus, the common large thistle of neglected pastures.

Webster 1913