Definition of "fontanel" []

• Any of the soft membranous gaps between the incompletely formed cranial bones of a fetus or an infant. Also called soft spot. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "FEIGIN: You have a spot called the fontanel but the thickness of the skull is minimal and it ` s easily fractured with not a whole lot of force."
• "The fontanel is the soft spot on the top of a newborn baby's head."
• "Being so frightfully concerned for her, I refused to touch the soft fontanel at the top of her head for any reason."