Green’s Dictionary of Slang

kimblock n.

(UK Und.) a rich fool, as such a potential target for robbery; thus kimblocky adj., having more money than sense.

[UK]Duncombe New and Improved Flash Dict. n.p.: Kimblocks fools, boasting of and shewing the money they may have about them: or paying for a glass of liquor take a whole handfull of silver and gold out together. Kimblocky more money than wit.