See also: EiB English English Wikipedia has an article on:EIBWikipedia Noun EIB (countable and uncountable, plural EIBs) (military, US, countable) Initialism of Expert Infantryman Badge. (medicine) Initialism of exercise-induced bronchoconstriction (or bronchospasm). Anagrams -bie, BIE, IEB, IbeWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads