Pore, v. i. [imp. & p. p. Pored p. pr. & vb. n. Poring.] To look or gaze steadily in reading or studying; to fix the attention; to be absorbed; -- often with on or upon, and now usually with over.“Painfully to pore upon a book.”
The eye grows weary with poring perpetually on the same thing. --Dryden.