▪ I.† comˈplane,v.Obs. In 5 complayne. [a. OF.complane-r:—L. complānāre.] To make plain or level. c1420Pallad. on Husb. vii. 14 And so to drie it [the threshing-floor] they complayne.1755Johnson, To complanate, To complane. ▪ II.complane, complant obs. ff. complain, complaint.