Entry 1 sense Webster, 1913 Overbrow · O·ver·brow · IPA /ˌəʊvə(ɹ)ˈbɹaʊ/ 01 v. t. To hang over like a brow; to impend over. 1. To hang over like a brow; to impend over.[Poetic] “Did with a huge projection overbrow Large space beneath.” — Wordsworth.