Green’s Dictionary of Slang

aggie n.²

[? generic use of the female name]

1. (US gay) a homosexual sailor.

1972		B. Rodgers Queens’ Vernacular.
1989–2003		R.O. Scott Gay Sl. Dict. 🌐.

2. (S.Afr. gay) gossip.

2003

K. Cage Gayle.