Definition of cockrose in English:

cockrose

Pronunciation /ˈkɒkrəʊz/

noun

dialect, rare Scottish, British
  • Any of several wild poppies having a red flower, especially the common field poppy, Papaver rhoeas.

Origin

Mid 17th century. Probably an alteration of cop-rose (although this is first attested later), after cock, with allusion to a cock's red comb and wattle.