The Collaborative International Dictionary of English v.0.48:

Ciclatoun \Cic"la*toun`\, n. [Of. ciclaton.]
   A costly cloth, of uncertain material, used in the Middle
   Ages. [Obs.] [Written also checklaton, chekelatoun.]
   [1913 Webster]

         His robe was of ciclatoun,
         That coste many a Jane.                  --Chaucer.
   [1913 Webster]