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Wiktionary
ahb

n. (context UK rail transport English) (initialism of automatic Automatic half Half barrier Barrier level crossing Level Crossing English)

Wikipedia
AHB

AHB may refer to:

  • Al Hilal Bank
  • Abha Airport in Abha, Saudi Arabia
  • Africanized honeybee
  • Air Historical Branch, the historical archive service of the Royal Air Force
  • All Hallows, Bow, a church in East London
  • AMBA High-performance Bus, internal bus for microcontrollers
  • Auckland Harbour Bridge in Auckland, New Zealand
  • Axamb language
  • Automatic Half Barrier, a term used in the United Kingdom for a type of level crossing