Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

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

Derived forms: bull thistles

Type of: plume thistle, plumed thistle

Encyclopedia: Bull thistle