upiti

1. (of liquid, smell) to absorb; to soak up
   Sunđer je upio svu vodu sa stola. — The sponge soaked up all the water from the table.
   Jakna je upila miris dima. — The jacket absorbed the smell of smoke.
2. (of knowledge, impressions) to take in; to absorb
   Deca brzo upiju sve što čuju kod kuće. — Children quickly take in everything they hear at home.
3. (upiti se u + acc.) to dig into; to latch onto
   Krpelj se upio psu u kožu. — A tick latched onto the dog's skin.
4. (upiti se u + acc.; of liquid) to soak in; to be absorbed
   Krema se brzo upila u kožu. — The cream quickly soaked into the skin.

The imperfective is upijati; don't confuse it with "upitati" (to ask).