The Collaborative International Dictionary of English v.0.48:

Coxcombical \Cox*comb"ic*al\ (k?ks-k?m"?-kal), a.
   Befitting or indicating a coxcomb; like a coxcomb; foppish;
   conceited. -- Cox*comb"ic*al*ly, adv.
   [1913 Webster]

         Studded all over in coxcombical fashion with little
         brass nails.                             --W. Irving.
   [1913 Webster]