An agreement announced today gives the World Pog Federation of Costa Mesa, Calif., exclusive rights to the word "Pog," the name of the Hawaiian sidewalk game that caught on in California last year and is growing into a multimillion-dollar international industry.

Known also as "milk caps," the game, played with wafer-like disks, is supplanting older children's pastimes like marbles. But wars over the name Pog, which World Pog had claimed as a trademark and other companies argued was a generic term, had resulted in nasty, sometimes violent confrontations at swap meets, trade shows and flea markets where independent producers marketed their disks.

The new agreement, ending a months-long legal dispute, allows the World Pog Federation exclusive use of the term Pog on its disks and other game products. The Universal Pogs Association, which had claimed that Pog was a generic word for the game disks, will change its name to Universal Slammers Inc. and will refrain from calling its pieces Pogs, both parties said.

Children in Hawaii began playing the game years ago, using the caps of juice bottles and cardboard milk containers. Players hit the lighter cardboard disks with a metal or plastic "slammer." A player gets a point for each opponent's piece he flips over.