Tennyson.
Syn. -- To perceive; distinguish; discover; penetrate; discriminate; espy; descry; detect. See Perceive.
Dis*cern", v. i. 1. To see or understand the difference; to make distinction; as, to discern between good and evil, truth and falsehood.
More than sixscore thousand that cannot discern between their right hand their left.
Jonah iv. 11.