Green’s Dictionary of Slang

daddle n.

also dandle
[dial.]

[late 18C–19C] (UK Und.) the hand; in pl., the fists.

In phrases

tip someone the daddle (v.)

[early 19C] to hit with the fist.

tip us your daddle (also tip us your dad)

[late 18C–19C] a request that someone shake hands.