tuce

1. dozen
   Kupila sam tuce jaja na pijaci. — I bought a dozen eggs at the market.
   Ruže se prodaju na tuce. — The roses are sold by the dozen.
2. colloq. dozens; a lot
   Rekao sam ti to već tuce puta! — I've told you that a dozen times already!

Tuce is followed by the genitive plural: tuce jaja.