expression, noun
grim stare; stern look
Describes a severe, intimidating, or angry expression in the eyes. Often used when someone is glaring or looking harshly at another person.
彼は険しい目で私をにらんだ。
He glared at me with a stern look.
上司の険しい目に、私は何も言えなかった。
Under my boss's grim stare, I couldn't say anything.