noun

• (figurative) Berth; position.
  "His shafts of satire fly straight to their billet, and there they rankle."

verb

• (transitive, of a householder etc.) To lodge soldiers, or guests, usually by order.
  "Billeted in so antiquated a mansion."
• (intransitive, of a soldier) To lodge, or be quartered, in a private house.
• (transitive) To direct, by a ticket or note, where to lodge.

noun

• (metallurgy) A semi-finished length of metal.
  "The Saturday evening Cardiff-West Wales mail train is still steam-worked, but a most unlikely locomotive used on May 23 was Stanier Class 5 4-6-0 No. 45250 (5A); it returned on May 25 with a train of steel billets."
• (heraldry) A rectangle used as a charge on an escutcheon.
• (architecture) An ornament in Norman work, resembling a billet of wood, either square or round.
• (saddlery) A strap that enters a buckle.