sext

from WordNet (r) 3.0 (2006)

sext
    n 1: the fourth of the seven canonical hours; about noon

from The Collaborative International Dictionary of English v.0.48

Sext \Sext\, n. [L. sexta, fem. of sextus sixtt, fr. sex six:
   cf. F. sexte.] (R.C.Ch.)
   (a) The office for the sixth canonical hour, being a part of
       the Breviary.
   (b) The sixth book of the decretals, added by Pope Boniface
       VIII.
       [1913 Webster]