any tiny hole admitting passage of a liquid (fluid or gas)
"The sponge absorbs water through its millions of tiny pores, filtering out impurities as it swells."
any small opening in the skin or outer surface of an animal
"After working out, I wiped my face to dry up the sweat coming from every open pore on my forehead."
A tiny opening in the skin.
"After applying the moisturizer, she gently patted her face to help open up every pore and absorb the product."
to study meticulously; to go over again and again.
"Before signing the contract, my lawyer pored over every clause to ensure there were no hidden fees."