privesak

1. pendant
   Za rođendan je dobila zlatni privesak u obliku srca. — For her birthday she got a gold heart-shaped pendant.
2. (for keys) key ring; keychain
   Kupio sam privesak za ključeve u Novom Sadu. — I bought a keychain in Novi Sad.
3. derog. (of a person) appendage; hanger-on
   On je samo njen privesak, ništa ne odlučuje sam. — He's just her appendage, he decides nothing himself.

The variant privezak is also common, especially for a keychain.