crepuscle

from WordNet (r) 3.0 (2006)

crepuscle
    n 1: the time of day immediately following sunset; "he loved the
         twilight"; "they finished before the fall of night" [syn:
         {twilight}, {dusk}, {gloaming}, {gloam}, {nightfall},
         {evenfall}, {fall}, {crepuscule}, {crepuscle}]

from The Collaborative International Dictionary of English v.0.48

Crepuscle \Cre*pus"cle\ (kr[-e]*p[u^]s"s'l), Crepuscule
\Cre*pus"cule\ (kr[-e]*p[u^]s"k[-u]l), n. [L. crepusculum, fr.
   creper dusky, dark: cf. F. cr['e]puscule.]
   Twilight. --Bailey.
   [1913 Webster] Crepuscular

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