Broadway /ˈbɹɔdweɪ/noun 2adjective 2 noun2 •the business of putting on plays in the big theaters of New YorkAmong the ensemble’s strange, outmoded, “original” instruments — the feral horns, sour violins, wooden flutes, cellos without endpins — she seemed right at home, despite her Broadway provenance. — 2007 •(slang) The highest straight in poker, ace-king-queen-jack-ten. adjective2 •Flashy; showy.Since he got the recording contract, he's gone all Broadway. •(slang) Of, or pertaining to, the cards that make up a Broadway straight.