The following is from 'The Blackhouse' by Peter May
The real bastard was a short, stocky man with thick, sandy hair Brylcreemed back from a low brow.
I know what a 'brow' is. I also looked up a 'low brow' in the dictionary but it doesn't have a physical definition here Where about is a 'low' brow located on person's brow in a physical sense? Is it somewhere right above one's eyebrow?