cocked hat
Concise Oxford English Dictionary © 2008 Oxford University Press:
cocked hat
▶noun a brimless triangular hat pointed at the front, back, and top.
■ historical a hat with a wide brim permanently turned up towards the crown.
– phrases
knock something into a cocked hat utterly defeat or outdo something.
knock something into a cocked hat utterly defeat or outdo something.
'cocked hat' also found in these Oxford entries:

