noun · to look at someone or something from the corner of one's eye, often indicating suspicion, disdain, or curiosity

他斜眼看着那个不怀好意的陌生人。

noun · to be cross-eyed or wall-eyed; a physical condition where the eyes are not aligned properly

他从小就有斜眼的毛病，看东西时总是斜着头。