From BiblePortal Wikipedia

King James Dictionary [1]

GAY, a.

1. Merry airy jovial sportive frolicksome. It denotes more life and animation than cheerful.

Belinda smiled, and all the world was gay.

2. Fine showy as a gay dress. 3. Inflamed or merry with liquor intoxicated a vulgar use of the word in America.

GAY, n. An ornament. Not used.

Vine's Expository Dictionary of NT Words [2]