cowberries

from The Collaborative International Dictionary of English v.0.48

Cowberry \Cow"ber`ry\ (-b[e^]r`r[y^]), n.; pl. {Cowberries}
   (-r[i^]z). (Bot.)
   A species of {Vaccinium} ({Vaccinium Vitis-id[ae]a}), which
   bears acid red berries which are sometimes used in cookery;
   -- locally called {mountain cranberry}.
   [1913 Webster]