's Edit Meaning

1.

How the grammatically-challenged make a noun plural.

Look at all these definition's.

2.

Added to the end of a word to make a singular possesive (or sometimes a plural possesive with words whose plurals do not end with S, such as people) or a contraction with "is" or "has". Poorly-educated people/foreigners tend to use it for plurals and verbs, but that usage is incorrect.

-Correct-

Bob's cat is black.

Bob's going to the store.

Bob's gone to the store to get his cat some food.

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-Incorrect-

Cat's are fluffy animals.

Bob has a cat that overeat's.