Nombril

from WordNet (r) 3.0 (2006)

nombril
    n 1: the center point on a shield

from The Collaborative International Dictionary of English v.0.48

Nombril \Nom"bril\, n. [F. nombril, for OF. lombril, i. e.,
   ombril, with the article, a dim. fr. L. umbilicus the navel.
   See {Navel}.] (Her.)
   A point halfway between the fess point and the middle base
   point of an escutcheon; -- called also {navel point}. See
   {Escutcheon}.
   [1913 Webster]