v. [UN-2 3.]
1. trans. To free (the brow, etc.) from wrinkles; to smooth (a wrinkled surface).
1611. Cotgr., Desplisser, to vnwrinkle, vncrumple. Ibid., s.v. Desfroncer, To cleere, vncloud, or vnwrinckle his visage.
1725. Ramsay, Gentl. Sheph., V. iii. See how much joy unwrinkles every brow.
1784. J. Potter, Virtuous Villagers, II. 185. By unwrinkling the brow of care, [it has] given place to calm contentment.
1822. Scott, Nigel, Introd. Epist. To unwrinkle a brow bent with the furrows of daily toil.
1880. Meredith, Tragic Com., x. 181. He unwrinkled the letter carefully for it to be legible.
2. intr. To become free from wrinkles.
1827. Perils & Captivity (Constables Misc.), 85. Foreheads, lowering and sulky, began to unwrinkle.