[1] : The Collaborative International Dictionary of English v.0.48

calotte \calotte"\, callot \cal"lot\, n. f. calotte, dim. of
   cale a sort of flat cap. cf. caul.
   a close cap without visor or brim. especially:
   a such a cap, worn by english serjeants at law.
   b such a cap, worn by the french cavalry under their
       helmets.
   c such a cap, worn by the clergy of the roman catholic
       church.
       1913 webster

   to assume the calotte, to become a priest.
      1913 webster
see also:
caul to assume the calotte 

Calotte >> C Words
Calotte, definition of term: Calotte
calotte_pag1.html

Assume >> A Words
Assume, definition of term: Assume
assume_pag1.html