a. and sb. rare. [a. F. crépusculin, -ine, ad. med.L. crepusculīn-us, f. crepuscul-um: cf. L. matutīnus, vespertīnus: see -INE.]
A. adj. Pertaining to twilight; illuminated by twilight, dim, dusky.
1549. Compl. Scot., vi. 38. Aurora … hed persit the crepusculyne lyne matutine of the northt northt est orizone.
1667. Sprat, Hist. Royal Soc., 314 (T.). To take in more or less light … to fit Glasses to Crepusculine Observations.
1876. G. Meredith, Beauch. Career (1889), 309. The line of downs ran luminously edged against the pearly morning sky, with its dark landward face crepusculine yet clear in every combe.
† B. sb. The (morning) twilight. Obs.
1549. Compl. Scot., 53. In the mornyng … it is callit lucifer, be cause it auancis the day befor the crepusculine.
