The Collaborative International Dictionary of English v.0.48:

Fusil \Fu"sil\, n. [F. fusil, LL. fosile a steel for kindling
   fire, from L. focus hearth, fireplace, in LL. fire. See
   Focus, and cf. Fusee a firelock.]
   A light kind of flintlock musket, formerly in use.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fusil \Fu"sil\, n. [See 3d Fusee.] (Her.)
   A bearing of a rhomboidal figure; -- named from its shape,
   which resembles that of a spindle.
   [1913 Webster]

   Note: It differs from a lozenge in being longer in proportion
         to its width.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fusil \Fu"sil\, a. [L. fusilis molten, fluid, fr. fundere,
   fusum, to pour, cast. See Fuse, v. t.]
   1. Capable of being melted or rendered fluid by heat;
      fusible. [R.] "A kind of fusil marble" --Woodward.
      [1913 Webster]

   2. Running or flowing, as a liquid. [R.] "A fusil sea." --J.
      Philips.
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   3. Formed by melting and pouring into a mold; cast; founded.
      [Obs.] --Milton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

fusil
    n 1: a light flintlock musket