f. The time taken to close and open the eye, the twinkling of an eye :-- Preówthwíle, beorht (bearhtme?) atomo (έν άτομω in an instant. See also Anglia viii. 318, 43 :-- 564 atomi wyrcaþ án momentum, 4 momenta gefyllaþ minutum, 21/2 minuta, gewyrcaþ ánne prican, 4 prica gewyrceaþ áne tíd), Hpt. Gl. 462, 9. On ánre preówthwíle on ðære endenétan býman in ictu oculi, in nouissima tuba, Homl. Th. ii. 568, 23. Cf. be-príwan to wink with the eye, Wulfst. 148, 13. preowt-hwil