-'s

-'s

suff.

Used to form the possessive case of singular nouns, plural nouns that do not end in s, certain pronouns, and phrases that function as nouns or pronouns: nation's; women's; another's; the girl next door's cat.

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[Middle English -s, -es, from Old English -es, genitive sing. suff.]

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-'s

suffix

1. forming the possessive singular of nouns and some pronouns: woman's, one's

2. forming the possessive plural of nouns whose plurals do not end in -s: children's

3. forming the plural of numbers, letters, or symbols: 20's

4. Informal contraction of is or has: it's over

5. Informal contraction of us with let: let's go