What does "gallberry" mean?

Either of two forms of holly whose nectar is used by bees to make a mild form of honey.

Gallberry

Common synonyms include: ilex glabra, evergreen winterberry, gall-berry, gallberry holly, gallberry honey, gallberry nectar honey.

noun

noun ·Rare ·Advanced level

Noun

1
Either of two forms of holly whose nectar is used by bees to make a mild form of honey.
2
evergreen holly of eastern North America with oblong leathery leaves and small black berries wordnet