Fontanelle

noun

Definitions

Noun
  1. 1
    A soft membraneous spot on the head of a baby due to incomplete fusion of the cranial bones.
  2. 2
    any membranous gap between the bones of the cranium in an infant or fetus wordnet
  3. 3
    A structural component of some woodwind instruments, such as recorders and shawms, resembling a barrel with holes bored into it, designed to protect the keywork and to allow the sound to project.

Etymology

Borrowed from French fontanelle, from Old French fontenelle, a diminutive of fontaine (“a fountain, a spring”).

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