A mode of calling to one passing by. Hip, Michael, your head’s on fire; a piece of vulgar wit to a red haired man.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Huzza * Hyp-1Nathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes