From WordNet (r) 3.0 (2006) [wn]:
lager
n 1: a camp defended by a circular formation of wagons [syn:
laager, lager]
2: a general term for beer made with bottom fermenting yeast
(usually by decoction mashing); originally it was brewed in
March or April and matured until September [syn: lager,
lager beer]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Lager \La"ger\, n.
Lager beer.
[1913 Webster]