Here is the meaning of the word, PORE

Pore ( v. ) - A minute opening or passageway; an interstice between the constituent particles or molecules of a body; as, the pores of stones.
Pore ( v. ) - One of the minute orifices in an animal or vegetable membrane, for transpiration, absorption, etc.
Pore ( v. i. ) - 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.