B-boy

a boy or young man who likes or is involved in hip-hop culture.
Contemporary Examples

As one of the b-boy pioneers, he travels around the world, performing, teaching workshops, and judging battles.
Break Dancing’s Big Break? Dvora Meyers April 8, 2010

Coupelin, 29, a veteran of the U.S. Air Force and a b-boy with 10 years experience, hopes to upgrade to seated venues next year.
Break Dancing’s Big Break? Dvora Meyers April 8, 2010

noun
a male rap-music fan, who typically can be identified by his casual style of dress

noun

A devotee of rap music •Originally applied to mid-1980s break dancers: b-boys with business cards
A stylish dresser

[1980s+; perhaps abbreviation of break boy, perhaps of beat boy or bad boy]

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B-boying
a style of acrobatic dancing that combines intricate footwork with spinning and tumbling, usually to funk or hip-hop music.
Britten
(Edward) Benjamin, 1913–76, English composer and pianist. Contemporary Examples In the end, the problem for Britten and Berkeley was the same. The Best of Brit Lit Peter Stothard April 27, 2011 Historical Examples Britten and I belonged to one of the precocious types, and Cossington very probably to another. The New Machiavelli Herbert George Wells […]
Bulow
Prince Bernhard von [bern-hahrt fuh n] /ˈbɛrn hɑrt fən/ (Show IPA), 1849–1929, chancellor of Germany 1900–09. Hans (Guido Freiherr) von [hahns goo-ee-doh,, frahy-her fuh n] /hɑns guˈi doʊ,, ˈfraɪˌhɛr fən/ (Show IPA), 1830–94, German pianist and conductor. Contemporary Examples I met Sunny von bulow more than two decades before I fell in love with her […]

Billie burke
Billie (Mary William Ethelbert Appleton Burke) 1886–1970, U.S. actress. Edmund, 1729–97, Irish statesman, orator, and writer. Kenneth Duva [doo-vey] /duˈveɪ/ (Show IPA), 1897–1993, U.S. literary critic. Historical Examples billie burke was the daughter of a humble circus clown in America. Charles Frohman: Manager and Man Isaac Frederick Marcosson and Daniel Frohman In 1913 billie burke […]
B bursary
noun (NZ) the lower of two bursaries available for students entering university, polytechnic, etc Compare A bursary