The initial idioms of the letter A

a know-all	a knuckle sandwich
à la carte	à la mode
a labor of love	a labour of love
lady killer	a lady-killer
a lager lout	a lame duck
lard-arse	a lard-arse
a lash of scorpions	a last hurrah
latchkey child	latchkey kid
a latchkey child	a laugh a minute
a laughing stock	laughing stock
a laundry list	a law unto
law unto	a leading light
a lean patch	a leap in the dark
a leg to stand on	a leg up
a legend in (one's) own lifetime	a legend in (one's) own lunchtime