UB

English

Proper noun

UB

1. Initialism of Ulaanbaatar.
2. (historical) Initialism of Urząd Bezpieczeństwa, a branch of the secret police in communist Poland.
   • 2010, Christopher Hitchens, Hitch-22, Atlantic, published 2011, page 188:

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

Noun

UB (countable and uncountable, plural UBs)

1. (programming, C, C++) Initialism of undefined behavior, behavior not defined in the language standard.
2. (sports) Initialism of upper bracket.
3. (gymnastics) Abbreviation of uneven bars.

   Coordinate terms: AA, BB, FX, VT

Anagrams

• B/U, BU, Bu, bu