The initial idioms of the letter A

girl crush	a girl Friday
a give-and-take	a glamour girl
a glass ceiling	a gleam in eye
gleam in (one's) eye	glimmer of hope
glint in (one's) eye(s)	a drug on the market
a glutton for punishment	try at
a God-given right	a go-getter
a going concern	a gold digger
a golden boy	a golden handshake
a golden hello	a golden key can open any door
a golden oldie	a golden parachute
golden touch	a goldfish bowl
a goner	a gong show
a good	a good beginning makes a good ending
a good deal	a good drunk