ETYMOLOGY
from glim (a light of any kind; a candle, a lantern) + flashy (given to show)
EXAMPLE
“… What ho, my kiddy,” cried Job, “don’t be glimflashy: why you’d cry beef on a blater; the cove is a bob cull, and a pal of my own; and, moreover, is as pretty a Tyburn blossom as ever was brought up to ride a horse foaled by an acorn.. …”
From: Pelham; Or, The Adventures of a Gentleman
Volume I, Second Edition, 1828
Lexicophilia 