1.
having or showing a merry, lively mood: gay spirits; gay music.
2.
bright or showy: gay colors; gay ornaments.
3.
given to or abounding in social or other pleasures: a gay social season.
4.
licentious; dissipated; wanton: The baron is a gay old rogue with an eye for the ladies.
5.
homosexual.
6.
of, indicating, or supporting homosexual interests or issues: a gay organization.
–noun
7.
a homosexual person, esp. a male.