Green’s Dictionary of Slang

heyderdan n.

[? facet. use of popular ballad chorus ‘hey derry down!’]

(UK Und.) an old brothel-keeper who has been whipped ‘at the cart’s tail’.

[UK]Canting Academy, or the Pedlar’s-French Dict. n.p.: A Heyderdan An old Bawd that has been carted.