Viper's grass Meaning, Definition & Usage

  1. noun perennial south European herb having narrow entire leaves and solitary yellow flower heads and long black edible roots shaped like carrots
    scorzonera; Scorzonera hispanica; black salsify.

WordNet

Definitions
  1. (Bot.), a perennial composite herb (Scorzonera Hispanica) with narrow, entire leaves, and solitary heads of yellow flowers. The long, white, carrot-shaped roots are used for food in Spain and some other countries. Called also viper grass.

Webster 1913