What part of speech is rounders?

"Rounders" can be a few different parts of speech depending on the context:

* Noun: When referring to the game itself, it is a noun. For example: "We played a game of rounders."

* Verb: It can be used as a verb when describing the act of playing the game. For example: "The kids rounded for hours."

* Adjective: Less common, but "rounders" can also be used as an adjective to describe something related to the game, like a "rounders bat".

So, without further context, it's impossible to say for certain what part of speech "rounders" is.