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.

2. Running or flowing, as a liquid. [R.] "A fusil sea." J. Philips.

3. Formed by melting and pouring into a mold; cast; founded. [Obs.] Milton.

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.

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

☞ It differs from a lozenge in being longer in proportion to its width.