D defs.my
Entry 2 senses Webster, 1913

Fontanel

· Fon·ta·nel · IPA
01 n. An issue or artificial ulcer for the discharge of humors from the body.
  1. 1.
    An issue or artificial ulcer for the discharge of humors from the body.(Med.) [Obs.]
  2. 2.
    One of the membranous intervals between the incompleted angles of the parietal and neighboring bones of a fetal or young skull; -- so called because it exhibits a rhythmical pulsation.(Anat.)