(of a look )目光 out of the corner of your eye, especially in a way that is secret or shows that you do not approve of somebody/something 侧眼偷看的;斜着眼看的;睨视的 Oxford Collocations DictionarySidelong is used with these nouns:- glance
Word Originlate Middle English: alteration of earlier sideling, from side + the adverbial suffix -ling.