I live in a part of Spain that has the Valencian language as official (apart from Spanish), though I don't speak it very well. Son means dream in that language, but as "sonas" word, I can't recognize it. I searched now, maybe it could mean happiness in Irish. Well, here are more options what it could mean :)
I would opt for happiness or dreaming hahahaha
Meanwhile, in our country it could mean a zone hehe..