What does "leer" mean?

Additional senses

1. 2.complexion; aspect; appearance. [Obs.] A Rosalind of a better leer than you. Shak.
2. 3.A distorted expression of the face, or an indirect glance of the eye, conveying a sinister or immodest suggestion. With jealous leer malign Eyed them askance. Milton. She gives the leer of invitation. Shak. Damn with faint praise, assent with civil leer. Pope.
3. 4.To look with a leer; to look askance with a suggestive expression, as of hatred, contempt, lust, etc. ; to cast a sidelong lustful or malign look. I will leer him as a'comes by. Shak. The priest, above his book, Leering at his neighbor's wife. Tennyson.
4. 5.To entice with a leer, or leers; as, to leer a man to ruin. Dryden.