The Collaborative International Dictionary of English v.0.48:

Chapiter \Chap"i*ter\, n. [OF. chapitel, F. chapiteau, from L.
   capitellum, dim. of caput head. Cf. Capital, Chapter.]
   1. (Arch.) A capital [Obs.] See Chapital. --Ex. xxxvi. 38.
      [1913 Webster]

   2. (Old Eng. Law) A summary in writing of such matters as are
      to be inquired of or presented before justices in eyre, or
      justices of assize, or of the peace, in their sessions; --
      also called articles. --Jacob.
      [1913 Webster]

WordNet (r) 3.0 (2006):

chapiter
    n 1: the upper part of a column that supports the entablature
         [syn: capital, chapiter, cap]