E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
MacGirdies Mare,
used by degrees to eat less and less, but just as he had reduced her to a straw a day the poor beast died. This is an old Greek joke, which is well known to schoolboys who have been taught the Analecta Minra. (See Waverley, p. 54.)