Source : Webster's Revised Unabridged Dictionary (1913)

Salsify \Sal"si*fy\ (?; 277), n. [F. salsifis.] (Bot.)
   See {Oyster plant}
   (a), under {Oyster}.

Source : WordNet®

salsify
     n 1: edible root of the salsify plant [syn: {oyster plant}]
     2: Mediterranean biennial herb with long-stemmed heads of
        purple ray flowers and milky sap and long edible root;
        naturalized throughout United States [syn: {oyster plant},
         {vegetable oyster}, {Tragopogon porrifolius}]
     3: either of two long roots eaten cooked