pore (
http://definr.com/pore)
n 1: any tiny hole admitting passage of a liquid (fluid or gas)
2: any small opening in the skin or outer surface of an animal
3: a minute epidermal pore in a leaf or stem [syn:
stoma]
v : focus one's attention on something; "Please focus on your
studies and not on your hobbies" [syn:
concentrate,
focus,
center,
centre,
rivet]