(UN-1 7. Cf. WFris. on-, ûnroun, Du. onrond.)
1588. Lucar, trans. Tartaglia’s Colloq. Shooting, App. 24. To make round pellettes of unround yron pellettes by two wayes.
1676. Newton, in Rigaud, Corr. Sci. Men (1841), II. 383. This [image] … will be … not much unround, unless the angles be very unequal.
1877. E. Sang (title), The Toothing of Unround Discs, which are intended to Roll upon each other.
