Source : Webster's Revised Unabridged Dictionary (1913)

Scarf \Scarf\, v. t. [imp. & p. p. {Scarfed}; p. pr. & vb. n.
   {Scarfing}.]
   1. To throw on loosely; to put on like a scarf. ``My sea-gown
      scarfed about me.'' --Shak.

   2. To dress with a scarf, or as with a scarf; to cover with a
      loose wrapping. --Shak.

Scarf \Scarf\, v. t. [Sw. skarfva to eke out, to join together,
   skarf a seam, joint; cf. Dan. skarre to joint, to unite
   timber, Icel. skara to clinch the planks of a boat, G.
   scharben to chop, to cut small.]
      (a) To form a scarf on the end or edge of, as for a joint
          in timber, metal rods, etc.
      (b) To unite, as two pieces of timber or metal, by a scarf
          joint.

Scarf \Scarf\ (sk[aum]rf), n. [Icel. skarfr.]
   A cormorant. [Scot.]

Scarf \Scarf\, n.; pl. {Scarfs}, rarely {Scarves} (sk[aum]rvz).
   [Cf. OF. escharpe a pilgrim's scrip, or wallet (hanging about
   the neck), F. ['e]charpe sash, scarf; probably from OHG.
   scharpe pocket; also (from the French) Dan. ski[ae]rf; Sw.
   sk["a]rp, Prov. G. sch["a]rfe, LG. scherf, G. sch["a]rpe; and
   also AS. scearf a fragment; possibly akin to E. scrip a
   wallet. Cf. {Scarp} a scarf.]
   An article of dress of a light and decorative character, worn
   loosely over the shoulders or about the neck or the waist; a
   light shawl or handkerchief for the neck; also, a cravat; a
   neckcloth.

         Put on your hood and scarf.              --Swift.

         With care about the banners, scarves, and staves. --R.
                                                  Browning.

Scarf \Scarf\, n.
      (a) In a piece which is to be united to another by a scarf
          joint, the part of the end or edge that is tapered
          off, rabbeted, or notched so as to be thinner than the
          rest of the piece.
      (b) A scarf joint.

   {Scarf joint}
      (a) A joint made by overlapping and bolting or locking
          together the ends of two pieces of timber that are
          halved, notched, or cut away so that they will fit
          each other and form a lengthened beam of the same size
          at the junction as elsewhere.
      (b) A joint formed by welding, riveting, or brazing
          together the overlapping scarfed ends, or edges, of
          metal rods, sheets, etc.

   {Scarf weld}. See under {Weld}.

Source : WordNet®

scarf
     n 1: a garment worn around the head or neck or shoulders for
          warmth or decoration
     2: a joint made by notching the ends of two pieces of timber or
        metal so that they will lock together end-to-end [syn: {scarf
        joint}]
     [also: {scarves} (pl)]

scarf
     v 1: masturbate while strangling oneself
     2: unite by a scarf joint
     3: wrap in or adorn with a scarf
     [also: {scarves} (pl)]