tucati

1. to crush; to pound; to crack
   Baka tuca orahe za kolače. — Grandma is cracking walnuts for the cakes.
   Radnici su ceo dan tucali kamen. — The workers were crushing stone all day.
2. (tucati se jajima) to knock Easter eggs together
   Za Uskrs se deca uvek tucaju jajima. — At Easter the kids always knock eggs together.
3. vulg. to screw; to shag
   Priča se da se njih dvoje tucaju. — Rumor has it the two of them are screwing.

Because of the vulgar sense, the word can sound suggestive in conversation.