What does the phrase "give of " mean?

I never heard of 'give of', but if you meant 'give off' then the meaning is to send out, to emit. Usually it's used for smells, e.g. The flowers give off fragant.

Hope this help.

"give of " is verb,I think it's mean:give to someone...,but I think "give of " is not correct,I think it should be''give for''.