3peater - What is 3peater short for in Plants vs. Zombies games?

3peater is short for "Threepeater." See an example of how people use it.
In Plants vs. Zombies games, 3peater is short for threepeater, which is a plant that shoots peas in the lanes around it (their lane and the one above and below it). Plants vs. Zombies (often abbreviated as PvZ) is a series of tower defense games where plant-wielding players defend against a horde of invading zombies. The games are available for most gaming platforms, including mobile devices.

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