E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Leglin-girth.
To cast a leglin-girth. To have “a screw loose;” to have made a faux pas; to have one’s reputation blown upon. A leglin-girth is the lowest hoop of a leglin or milk-pail. (See Sir Walter Scott: Fortunes of Nigel, chap. xxii.)
