[ad_1] adverb, adjective
- with an oblique glance or squint; askance; slyly; dubiously.
- (postpositive) with a glance from the corner of the eye, esp a furtive one
early 13c., “obliquely, with a sidelong glance,” of uncertain etymology; from schuinte ‘slope, slant’ of the independent use of which no instances survive …” [OED]. “Middle English Dictionary” compares French équinter “cut to a point;” French dialectal (e)squintar “cast a glance, look furtively.”(1) + “a word corresponding to Du.