Green’s Dictionary of Slang

(UK Und.) a sword.

c.1698		B.E. Dict. Canting Crew n.p.: Bite the Bil from the Cull c. whip the Sword from the Gentleman’s side.
1725		New Canting Dict. n.p.: Bite the Bill from the Cull; i.e. Whip the Sword from the Gentleman’s Side.