: a large-bowled footed drinking glass often elaborately etched or engraved
earlier also romer, borrowed from Dutch (17th century) roemer or German Römer, both meaning literally "person from Rome, Roman"
The form rummer presumably shows secondary shortening of the vowel. Perhaps the original sense was "drinking vessel resembling Roman glass," though a more precise origin of the name is apparently unknown. An association with Dutch roemen "to praise," from the use of such glasses in toasting, is probably secondary.