noun
narrow, slanted eyes
Describes eyes that are narrow and slanting upward, resembling a fox's eyes. Often used in character descriptions or as a physical trait.
彼女はキツネ目で、いつも何か企んでいるように見える。
She has narrow, slanted eyes and always looks like she's plotting something.
あの俳優のキツネ目が魅力的だ。
That actor's fox-like eyes are charming.
たれ目 refers to droopy, downward-slanting eyes, the opposite of キツネ目.
つり目 also means upward-slanting eyes, but キツネ目 specifically evokes a fox-like, narrow shape, often with a cunning or sly nuance.
Compound of キツネ (fox) and 目 (eye), literally 'fox eyes'.