baby

noun

1.
a very young child (birth to 1 year) who has not yet begun to walk or talk
babe in arms cradle-child tiny babe infant
Derived from:
baby babyhood
2.
the youngest member of a group (not necessarily young)
maknae line
3.
an immature childish person
cheeser cradle-witted man child child
Derived from:
babyhood
4.
an unborn child; a human fetus
bub
5.
a very young mammal
Derived from:
babyhood
6.
a project of personal concern to someone
7.