C16 (in the sense: steel for a tinderbox): from Old French fuisil, from Vulgar Latin focīlis (unattested), from Latin focus fire
fusil in British English2
(ˈfjuːzɪl)
noun
heraldry
a charge shaped like a lengthened lozenge
Word origin
C15: from Old French fusel, ultimately from Latin fūsus spindle, fuse1 (the heraldic lozenge originally represented a spindle covered with tow for spinning)
fusil in American English1
(ˈfjuzɪl; ˈfjusɪl)
adjective Archaic
1.
fusible or fusing
2.
a.
fused; melted
b.
made by melting and molding, or casting; founded
Also ˈfusile (ˈfjuzɪl; ˈfjusɪl; ˈfjuˌzaɪl; ˈfjuˌsaɪl)
Word origin
L fusilis < fusus: see fuse1
fusil in American English2
(ˈfjuzɪl)
noun
a light flintlock musket
Word origin
Fr, orig., steel for striking sparks < ML focile < L focus, hearth (in LL, fire): see focus