UB

1. abbreviationinitialismInitialism of Ulaanbaatar.
2. abbreviationhistoricalinitialismInitialism of Urząd Bezpieczeństwa, a branch of the secret police in communist Poland.

   He was still going, and strongly at that, in a tiny apartment much invigilated by the “U.B.” or Polish secret police.

   2010, Christopher Hitchens, Hitch-22, Atlantic, published 2011, page 188

3. PhilippinesabbreviationinitialismInitialism of University of Baguio.
4. PhilippinesabbreviationinitialismInitialism of University of Batangas.

plural UBs

1. abbreviationcountableinitialismuncountablecomputingInitialism of undefined behavior, behavior not defined in the language standard.
2. abbreviationcountableinitialismuncountablehobbiesInitialism of upper bracket.
3. abbreviationcountableuncountablegymnasticsAbbreviation of uneven bars.
4. abbreviationinitialismuncountableamong vorarephilesInitialism of unbirth.

1. abbreviationAbbreviation of you be.

   Sexual affair ¶ Short or long term. I’m 34, lk. 28, well built, small, 150 lbs, 5’10”, married. UB well kept and care about yourself, married, single, young or old.

   1996 October 4, “Variations”, in The Boston Phoenix, volume 25, number 40, Boston, Mass.: The Phoenix Media/Communications Group, Adult Services, page 3