fusil1

[fyoo-zuh l, -sil] /ˈfyu zəl, -sɪl/
noun
1.
a light flintlock musket.
Origin
1670-80; < French: musket, Old French fuisil, foisil steel for striking fire < Vulgar Latin *focīlis, derivative of Latin focus fire. See focus

fusil2

[fyoo-zuh l, -sil] /ˈfyu zəl, -sɪl/
adjective
1.
formed by melting or casting; fused; founded.
2.
Archaic. capable of being melted; fusible.
3.
Archaic. melted; molten.
Also, fusile
[fyoo-zuh l, -sil, -sahyl] /ˈfyu zəl, -sɪl, -saɪl/ (Show IPA).
Origin
1350-1400; Middle English < Latin fūsilis molten, fluid. See fuse2, -ile
British Dictionary definitions for fusil

fusil1

/ˈfjuːzɪl/
noun
1.
a light flintlock musket
Word Origin
C16 (in the sense: steel for a tinderbox): from Old French fuisil, from Vulgar Latin focīlis (unattested), from Latin focus fire

fusil2

/ˈfjuːzɪl/
noun
1.
(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)

fusile

/ˈfjuːzaɪl/
adjective
1.
easily melted; fusible
2.
formed by casting or melting; founded
Word Origin
C14: from Latin fūsilis molten, from fundere to pour out, melt
Word Origin and History for fusil
n.

flintlock musket, 1670s, from French fusil (see fusilier).