1. glower, glare -- (look at with a fixed gaze; "The girl glared at the man who tried to make a pass at her")
2. frown, glower, lour, lower -- (look angry or sullen, wrinkle one's forehead, as if to signal disapproval)
glower can be used as a noun
1. glare, glower -- (an angry stare)
1.
And there's a headless man stalks up and down the path and skeletons glower at you between the boughs. - from Anne Of Green Gables by Lucy Maud Montgomery