fulgurate

from The Collaborative International Dictionary of English v.0.48

Fulgurate \Ful"gu*rate\, v. i. [L. fulguratus, p. p. of
   fulgurare to flash, fr. fulgur lightning, fr. fulgere to
   shine. See {Fulgent}.]
   To flash as lightning. [R.]
   [1913 Webster]