I"ve read it's the same word in English.

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Note added at 2 hrs (2012-08-15 14:21:36 GMT)
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I posted my answer from my phone. However, I can now give you some references:

Tazos are also known as Flippos, POG, Caps, Slammers, Whammers, Whackers, Trovs, Kinis, Blasters, Milkcaps, Clippos, Trouncers, and probably many other things, depending where in the world you are located.

http://spakatak.com/tazos/

In this reference (from the UK) they are called POGS

http://v1.milkcapmania.co.uk/howtoplay.html

All that stuff was great, but none of that could come close to the awesomeness of tazos. White kids had pogs, but tazos were our version of the same thing, and as far as we knew tazos were waaaay better.
Tazos were small plastic, circular disks with cartoon images or even soccer players on them. The most popular ones featured Looney Tunes, Tiny Tunes, and Simpsons characters. There was also the ever-important slammer. The slammer was a much thicker, heavier version of a tazo. Its sole purpose was to obliterate tazos (more on that in a bit).
You could really only get tazos in bags of Mexican chips (many Latin American, European, and Asian countries also had tazos). They had different variations of them, but none were cooler than the voladores, or flyers. Flyers had special grooves in them that allowed you to connect two tazos and launch them across the room. If that sounds lame it’s only cause you’re not nine years old.
Anyway, you collected tazos, and then you’d pit your tazos against other kids in school. Collecting tazos was cool, but the rush of winning or losing tazos made playing so addicting (I wonder how many of us grew up to have gambling problems).

http://www.beinglatino.us/lifestyle/what-kids-did-before-ipo...