noun
European annual wild lettuce having prickly stems; a troublesome weed in parts of United States
• Syn: ↑prickly lettuce, ↑Lactuca serriola, ↑Lactuca scariola
• Hypernyms: ↑compass plant, ↑compass flower
* * *
nounEtymology: Middle English hors thistel, from hors + thistel thistle
Useful english dictionary. 2012.