Beetle-browed adj. Having prominent, overhanging brows; hence, lowering or sullen. Note: The earlier meaning was, "Having bushy or overhanging eyebrows."
... being accosted in such a place at such an hour. He raised his heavy eyes as he leaned unsteadily against the counter, and saw two beetle-browed, square-faced, disagreeable-looking men looking at him with half-drunken, ... — Trumps • George William Curtis