Definition of low-bush cranberry in US English:

low-bush cranberry

noun

Canadian
  • Any of several low-growing North American shrubs bearing small red edible berries; especially the viburnum, Viburnum edule, and the cowberry, Vaccinium vitis-idaea.

Origin

Mid 19th century; earliest use found in Catharine Parr Traill (1802–1899), author, botanist, and settler in Canada.