From Longman Dictionary of Contemporary Englishglowerglow‧er /ˈɡlaʊə $ -ər/ verb [intransitive] LOOK ATto look at someone in an angry way SYN glareglower at She glowered at him disapprovingly. —glower noun [countable]→ See Verb table
Examples from the Corpus
glower• His cousin sat at the kitchen table, glowering.• He glowered at a taxi as it came to a noisy stop at the light.• He came in and glowered at them.• Standing tall and glowering down on the referee when things go wrong is not the answer.• All these obelisks are dark and sinister, their hulking forms glowering over a carpet of white bones under leaden skies.glower at• Mrs. Smith glowered at the boys until they were quiet.Origin glower (1400-1500) Probably from a Scandinavian language 