This word has many other definitions, but the definition I’m talking about is: A virgin, many guys or women call people that haven’t lost there virginity a baby
A small amount. An amount no larger than what a full baby'sbite would be.
While out for food two friends are sharing a 2 liter of Diet Coke. There is enough for one person to finish the bottle in one gulp, however he or she only pours a "a baby bit" and leaves the rest for his friend.
Nick: "Do you mind if I have a 'baby bit' of that diet coke."