Bf is an abbreviation for boyfriend, but it can also have other meanings in different contexts. Learn how to use bf in dating, gaming, baseball and more. BF is the abbreviation of best friend or boyfriend, used by young people and in magazines. Learn more about the usage and examples of BF in LDOCE. Bf definition: best friend.. See examples of BF used in a sentence. Who is your “ bf ”? Is it your boyfriend or your best friend? Learn the meaning, origin, and usage of this popular acronym.
