The Collaborative International Dictionary of English v.0.48:

Dowel \Dow"el\, v. t. [imp. & p. p. Doweledor Dowelled; p.
   pr. & vb. n. Doweling or Dowelling.]
   To fasten together by dowels; to furnish with dowels; as, a
   cooper dowels pieces for the head of a cask.
   [1913 Webster]