Their first word?

The girls say lots of different syllables . . . I don't know what they mean, but very often they look and sound like they are trying to tell me something. And they talk to each other all the time, though when they do that they usually get really excited and I'm not sure they ever finish their conversation. But lately, they've been saying "Ah-Dah" and I think that might mean "Daddy". It's hard to tell, because sometimes they use that to babble and sometimes they use it when they are being very serious. I guess time will tell if I've decoded a small part of their language!