Wiktionary
flamberge
n. (context weaponry English) A European sword, typically a rapier, which had a wavy blade, possibly to increase the cutting surface or for aid in parrying.
Usage examples of "flamberge".
Getting hit by the flat of that tremendous flamberge would still reduce her bones to mush!
The flamberge curled in an arc back over, left to right, then came across a second time, this cut angling down.
The huge flamberge, Bankenfuere, hummed as it swept through the air, each cut obliterating any enemies foolish enough to stand close to the huge man.
Excalibur, Tizona, Gram, Morglay, Durendal, Flamberge, Curtana, Quernbiter.
In fact, I seem to remember reading that some of our brethren from Morglay or Flamberge even occupied Aditya for a couple of centuries.