" You need to fix the statement. The word 'battery' is not correct here. Have you looked it up in your dictionary?
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CliveBut the correct answer is not 'battery'.
Actually, it is.
4. Baseball. The pitcher and catcher.
I would phrase the statement something like this:
Together the pitcher and catcher constitute the "battery."
Together the pitcher and catcher are the "battery."
Together the pitcher and catcher make up the "battery."