The Collaborative International Dictionary of English v.0.48:

Billet \Bil"let\, v. t. [imp. & p. p. Billeted; p. pr. & vb.
   n. Billeting.] [From Billet a ticket.] (Mil.)
   To direct, by a ticket or note, where to lodge. Hence: To
   quarter, or place in lodgings, as soldiers in private houses.
   [1913 Webster]

         Billeted in so antiquated a mansion.     --W. Irving.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Billet \Bil"let\, n. [F. billette, bille, log; of unknown
   origin; a different word from bille ball. Cf. Billiards,
   Billot.]
   1. A small stick of wood, as for firewood.
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            They shall beat out my brains with billets. --Shak.
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   2. (Metal.) A short bar of metal, as of gold or iron.
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   3. (Arch.) An ornament in Norman work, resembling a billet of
      wood either square or round.
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   4. (Saddlery)
      (a) A strap which enters a buckle.
      (b) A loop which receives the end of a buckled strap.
          --Knight.
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   5. (Her.) A bearing in the form of an oblong rectangle.
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The Collaborative International Dictionary of English v.0.48:

Billet \Bil"let\, n. [F. billet, dim. of an OF. bille bill. See
   Bill a writing.]
   1. A small paper; a note; a short letter. "I got your
      melancholy billet." --Sterne.
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   2. A ticket from a public officer directing soldiers at what
      house to lodge; as, a billet of residence.
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   3. Quarters or place to which one is assigned, as by a billet
      or ticket; berth; position. Also used fig. [Colloq.]
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            The men who cling to easy billets ashore. --Harper's
                                                  Mag.
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            His shafts of satire fly straight to their billet,
            and there they rankle.                --Pall Mall
                                                  Mag.
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Billard \Bil"lard\, n. (Zool.)
   An English fish, allied to the cod; the coalfish. [Written
   also billet and billit.]
   [1913 Webster] Billbeetle

WordNet (r) 3.0 (2006):

billet
    n 1: a short personal letter; "drop me a line when you get
         there" [syn: note, short letter, line, billet]
    2: lodging for military personnel (especially in a private home)
    3: a job in an organization; "he occupied a post in the
       treasury" [syn: position, post, berth, office,
       spot, billet, place, situation]
    v 1: provide housing for (military personnel) [syn: quarter,
         billet, canton]