American Heritage Dictionary of the English Language, 5th Edition
From low and brow, Americanism, circa 1902. Refers to the (by that time discredited) pseudoscience of phrenology, which suggested that a person of low intelligence and sophistication would possess a lower brow-line than someone of greater intelligence and sophistication.
Lowbrow Sentence Examples
At once highbrow and lowbrow, it has a way of adapting its identity to fulfill the desires of its visitors.
This was mostly because I had very lowbrow tastes.
And if you have an especially lowbrow sense of humor, you may be interested in American Apparel's towels in collaboration with Butt Magazine.