A piercing, intimidating look. Often implies anger, suspicion, or a warning. Can also be used figuratively for a watchful eye or pressure.
He gave me a sharp glare.
I'm afraid of my boss's glare and can't report the mistake.
keeping a close watch on both sides; keeping an eye on two things at once
watching all sides; keeping an eye on every direction
stare down; outstare
glare at each other · confront each other; face off
stare back; glare back
Standard kanji spelling for the noun form of 睨む.
Kana spelling is common in everyday writing, especially when the kanji is not essential.
Noun form of the verb 睨む (にらむ, to glare at), derived from the continuative stem (連用形). The kanji 睨 is composed of 目 (eye) and 兒 (child, but here a phonetic component), suggesting a fixed, staring eye.