The Collaborative International Dictionary of English v.0.48:

Pupillarity \Pu`pil*lar"i*ty\, n. [Cf. F. pupillarit['e]. See
   Pupillary.] (Scots Law)
   The period before puberty, or from birth to fourteen in
   males, and twelve in females.
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

PUPILLARITY, civil law. That age of a person's life which included infancy
and puerility. (q.v.)