It is all holiday at Peckham, or it is all holiday with him; a saying signifying that it is all over with the business or person spoken of or alluded to.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
All-a-mort * All HollowNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes