The Collaborative International Dictionary
yaud
yawd \yawd\ (y[add]d), n. [Cf. Icel. jalda a mare, E. jade a
nag.]
A jade; an old horse or mare. [Written also yaud.] [Prov.
Eng. & Scot.]
--Grose.
Wiktionary
yaud
n. (context Scotland Northern England English) A workhorse; an old or worn-out mare.