Definition of whortleberry:
(n) :
Any of several shrubs belonging to the genus Vaccinium:
(n) :
A berry of one of these shrubs.
(n) :
Vaccinium myrtillus (bilberry or blue whortleberry);
(n) :
Vaccinium vitis-idaea (lingonberry or red whortleberry);
(n) :
Vaccinium uliginosum (bog whortleberry or bilberry).