'Rummer' definitions:

Definition of 'rummer'

From: WordNet
noun
A large drinking glass (ovoid bowl on a stem) for drinking toasts

Definition of 'Rummer'

From: GCIDE
  • Rummer \Rum"mer\, n. [D. roemer, romer, akin to G. r["o]mer, Sw. remmare; perhaps properly, Roman.] A large and tall glass, or drinking cup. [Obs.] --J. Philips. [1913 Webster]