What is the meaning of the word "guess"?

Definitions:

a message expressing an opinion based on incomplete evidence noun
- That's my guess.
an estimate based on little or no information noun
- My guess is that there are 1000 mints in the jar.
to expect, believe, or suppose verb
- I guess I am one of the best basketball players here.
to guess correctly verb
- I guessed it!
to judge tentatively or form an estimate of verb
- From the evidence we have, I guess this manuscript comes from the early 1800s.
to put forward a guess in spite of possible refutation verb
- I am guessing that the price of real estate will rise again.