Define bo. bo synonyms, bo pronunciation, bo translation, English dictionary definition of bo. n. pl. bos A long staff, used as a weapon in martial arts. American Heritage® Dictionary of the English Language, Fifth Edition., 9 meanings: 1. an exclamation uttered to startle or surprise someone, esp a child in a game 2. slang an exclamation of. Click for more definitions., What does the abbreviation BO stand for? Meaning: back order., In summary, BO is an abbreviation that can stand for various terms depending on the context, and its interpretation can vary across different fields such as technology, business, education, geography, government, law and other specialized areas., Find out what is the full meaning of BO on Abbreviations.com! 'Bolivia' is one option -- get in to view more @ The Web's largest and most authoritative acronyms and abbreviations resource., This article delves into the meaning, usage, and cultural context of “bo,” providing examples, case studies, and relevant statistics. What Does ‘Bo’ Mean in Slang? In contemporary slang, “bo” serves as a versatile term that can denote various meanings based on context..