1. n. a lover; one’s sweetheart. (Also a term of address.) Come over here and kiss me, baby.
2. n. a term of address for a friend or pal of either sex. Come on, baby, push this thing—hard!
3. n. a thing; a gadget; a machine, such as a car. (Similar to sucker.) Hand me that baby with the sharp point, will you?
4. n. a project thought of as an offspring. (Always with a possessor.) Whose baby is the Johnson account?