Function: noun
Date: 1578
1 : a widely naturalized spiny Old World knapweed ( Centaurea calcitrapa ) with purple flowers ― called also caltrops
2 : any of various knapweeds related to the star thistle
Function: noun
Date: 1578
1 : a widely naturalized spiny Old World knapweed ( Centaurea calcitrapa ) with purple flowers ― called also caltrops
2 : any of various knapweeds related to the star thistle
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012