Leer1, v. i.
[imp. & p. p. LEERED; p. pr. & vb. n. LEERING.] [From the noun. Cf. O. D. loeren, to look askance.] To look obliquely; to turn the eye and cast a look from a corner, either in contempt, defiance, or frowning, or with sly allurement.
I will leer upon him as he comes by. Shak.