Obs. rare. [ad. L. frust-um a piece.] A fragment.
1765. Sterne, Tr. Shandy, VII. xxxi. Such a story affords more pabulum to the brain than all the Frusts, and Crusts, and Rusts of antiquity, which travellers can cook up for it.
1820. Sporting Mag. (N. S.), VI. 165. The top is a mere frust.