'Bock beer' definitions:

Definition of 'bock beer'

From: WordNet
noun
A very strong lager traditionally brewed in the fall and aged through the winter for consumption in the spring [syn: bock, bock beer]

Definition of 'Bock beer'

From: GCIDE
  • Bock beer \Bock" beer`\ [G. bockbier; bock a buck + bier beer; -- said to be so named from its tendency to cause the drinker to caper like a goat.] A strong beer, originally made in Bavaria. [Also written buck beer.] [1913 Webster]