Wiktionary
gray hats
n. (gray hat English)
Usage examples of "gray hats".
He returned with the empty platform to the dockside and stepped off, eyes on two men in long black coats and gray hats, who stood by the De Soto.
The father had on one of those pearl-gray hats that poor guys wear a lot when they want to look sharp.
Occasionally we encountered one or two cowpunchers: either Texans, habited exactly like their brethren in the North, with broad-brimmed gray hats, blue shirts, silk neckerchiefs, and leather leggings.