The Collaborative International Dictionary of English v.0.48:
grosz \grosz\ n. (gr[=o]sh) groszy (gr[=o]sh"[=e]) a Polish monetary unit, equal to [frac1x100] of a zloty. [WordNet 1.5]WordNet (r) 3.0 (2006):
grosz n 1: 100 groszy equal 1 zloty in Poland