Yes, the noun man's is the singular possessive form of the noun man as indicated by the apostrophe s ('s) at the end of the word. The possessive form indicates that something in the sentence belongs to a man.
Example: I'm looking for a nice man's watch for a gift.
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive form of zoo is zoo's.
The possessive form for the noun preacher is preacher's.
The possessive form for the noun laboratory is laboratory's.
No, he is not possessive. The possessive form would be his.
The possessive form for the noun oxygen is oxygen's.
The possessive form for the noun coyote is coyote's.
The possessive form is grandson's.
The possessive form is island's.
No, it is a singular possessive noun.
The possessive noun of Sam is Sam's.