Definition of gay

1. [noun] someone who practices homosexuality; having a sexual attraction to persons of the same sex
   
   
2. [adjective] bright and pleasant; promoting a feeling of cheer; "a cheery hello"; "a gay sunny room"; "a sunny smile"
   
   
3. [adjective] full of or showing high-spirited merriment; "when hearts were young and gay"; "a poet could not but be gay, in such a jocund company"- Wordsworth; "the jolly crowd at the reunion"; "jolly old Saint Nick"; "a jovial old gentleman"; "have a merry Christmas"; "peals of merry laughter"; "a mirthful laugh"
   
   
4. [adjective] given to social pleasures often including dissipation; "led a gay Bohemian life"; "a gay old rogue with an eye for the ladies"
   
   
5. [adjective] brightly colored and showy; "girls decked out in brave new dresses"; "brave banners flying"; "`braw' is a Scottish word"; "a dress a bit too gay for her years"; "birds with gay plumage"
   
   
6. [adjective] offering fun and gaiety; "a gala ball after the inauguration"; "a festive (or festal) occasion"; "gay and exciting night life"; "a merry evening"
   
   
7. [adjective] homosexual or arousing homosexual desires