The Collaborative International Dictionary of English v.0.48:

bagel \ba"gel\ (b[=a]"g'l), n. [Yiddish beygl, prob. fr. dial.
   G. Beugel. --RHUD]
   a glazed leavened doughnut-shaped roll with a hard crust.

   Note: A similar roll in Russia is called a bublik.
         [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

bagel
    n 1: (Yiddish) glazed yeast-raised doughnut-shaped roll with
         hard crust [syn: bagel, beigel]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "bagel":
   Danish, Danish pastry, English muffin, Parker House roll,
   Yorkshire pudding, bialy, bialystoker, bun, clover-leaf roll,
   coffee cake, crescent roll, croissant, cross bun, crumpet, gem,
   hard roll, hot cross bun, kaiser roll, muffin, onion roll,
   pinwheel roll, popover, roll, scone, soft roll



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

BAGEL
       Bay Area GNU Enthusiasts League (GNU, org., user group)