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to glare at; to scowl at; to glower at
to stare intensely at; to examine carefully
to estimate; to guess; to suspect; to judge
to keep an eye on someone (e.g. a suspicious or untrustworthy person); to watch
to take account of; to take into consideration
猫が鳥をじっとにらんでいた。
The cat was staring intently at the bird.
彼は怒った顔で相手をにらんだ。
He glared at the other person with an angry face.
列に割り込んだ男を周囲の人がにらんだ。
The people around glared at the man who cut in line.