If you glower at someone or something, you look at them angrily. He glowered at me but said nothing He glowered and glared, but she steadfastly refused to look his way. = glare. to look at someone in an angry way = glare glower at (Probably from a language)
[ 'glau(-&)r, ÷'glO(- ] (intransitive verb.) 15th century. Middle English glowren; perhaps of Scandinavian origin; akin to Norwegian dialect glyra to look askance, Icelandic glossa to glow; more at GLOSS.