overbrow /ˈəʊvə(ɹ)bɹaʊ/noun 2/ˌəʊvə(ɹ)ˈbɹaʊ/ verb 1forms 3 noun2 •The area immediately above the eyebrow and below the forehead.As I translated, however, Valeo's face contorted, his overbrow furrowing as he picked at his food. — 2016 •A projecting shelf of rock on the face of a cliff.For reasons of safety it was decided to drill off the overbrow and to blast it at one time to break 30,000 tons. — 1948 overbrow /ˌəʊvə(ɹ)ˈbɹaʊ/ verb1 •(literary) To hang over like a brow; to impend over.With solemn feet I tread the hill, That overbrows the lonely vale — 1852 formsoverbrowed · overbrowing · overbrows