The initial idioms of the letter A

a pitched battle	pitched battle
pit stop	place to call (one's) own
a place to call own	a plague on both your houses
a plain Jane	plain Jane
a play on words	a poacher turned gamekeeper
pocket dial	poison pen
a poisoned chalice	a poison-pen letter
a polite fiction	a political football
political football	a poor craftsman blames his tools
a poor man's	a poor relation
a pop	a port of call
harbinger of things to come	portmanteau word
port of call	Portuguese man-of-war
a powder keg	prawn cocktail offensive
a pretty pass	a price on head