(marketing) An instance of A/B testing.

(fandom slang) A subgenre of erotic speculative fiction (originating in fan fiction) in which humanity has a dominance hierarchy based on stereotypical wolf pack dynamics, consisting of alphas (dominants), omegas (submissives), and betas (neutrals).

Alternative form of ABC

Alternative form of ABC

Alternative form of ABC

(euphemistic) Any of various taboo words beginning with the letter B, particularly bitch.

(music) The major key with B as its tonic, with the notes B, C♯, D♯, E, F♯, G♯, and A♯, the key signature of which has five sharps. / (music) The major chord with a root of B.

(trains) A locomotive with an engine, generator, and traction motors, but without a control cab.

a pesticide consisting of hydrocyanic acid absorbed on pellets of diatomaceous earth; when exposed to the air hydrogen cyanide is released; used most infamously during the Nazi Holocaust in some gas chambers.

(US, slang) A bargirl.