what does this sentence mean?
The context:
A: Here's the riddle:You love deep-sea fishing in Florida, and you're crazy about skiiing in Canada, but you can't afford even one holiday home, what do you do?
B. I bought a share in two holiday homes, so I own a week or more at each place.
My question: what does "bought a share" mean?

Question

Answer

There are vacation homes called time-shares where numerous owners pay a portion for the right to use the vacation home for a specific length of time each year, usually a week. This person bought a share in two different homes, so he can have a week's holiday at each home every year.

Answer

Buying a share refers to: renting home for a period of time, usually end week or two weeks.
I think

Answer

bought is the past tense of "to buy" and a share means "a piece". So in this context it means that you buy part of (or a stake in) the holiday home so that you become co-owner.