"top of the head," Old English hnoll, cognate with Middle Dutch nolle, Old High German hnol "back part of the head."
Online Etymology Dictionary, © 2010 Douglas Harper
Examples from the Web for noll
The Steelers, still in their pre-Chuck Noll nadir, “were horrible,” he says.Tough-to-Beat Election Behind Him, Rick Santorum Plays Fantasy Baseball
April 13, 2012
Noll, Jennie G., et al. “Obesity Risk for Female Victims of Childhood Sexual Abuse: A Prospective Study.”Will I Get Fat? 15 Signs You'll Gain Weight
November 10, 2011
Old Noll had a noose of hemp ready for horse-stealers, were they for King or for Parliament.Micah Clarke
Arthur Conan Doyle
I must believe you, Noll, for did I not, then I could believe in naught and hope for naught.The Sea-Hawk
Old Noll himself would have jumped out of the canvas at the tidings.Sir Jasper Carew
Charles James Lever
Noll came to him pretty soon, said "Good-night," and went away.
Noll's face was very grave, but he kept his place and said nothing.