The Collaborative International Dictionary of English v.0.48:

Tooth \Tooth\, v. t. [imp. & p. p. Toothed; p. pr. & vb. n.
   Toothing.]
   1. To furnish with teeth.
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            The twin cards toothed with glittering wire.
                                                  --Wordsworth.
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   2. To indent; to jag; as, to tooth a saw.
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   3. To lock into each other. See Tooth, n., 4. --Moxon.
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The Collaborative International Dictionary of English v.0.48:

Toothing \Tooth"ing\, n.
   1. The act or process of indenting or furnishing with teeth.
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   2. (Masonry) Bricks alternately projecting at the end of a
      wall, in order that they may be bonded into a continuation
      of it when the remainder is carried up.
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   Toothing plane, a plane of which the iron is formed into a
      series of small teeth, for the purpose of roughening
      surfaces, as of veneers.
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