decurve,v.rare.|dɪˈkɜːv| [f. L. dē- down + curvāre to curve.] To curve or bend down. Hence deˈcurvedppl. a., curved downwards. 1835Kirby Hab. & Inst.Anim. I. ix. 274 An incipient decurved spire.1892Athenæum 18 June 795/2 The upper mandible [of a parakeet] was so abnormally decurved.