1)...enlengthened form of Mom.
2)A woman who constantly bitches at you for random shit you probably didn't do, to achieve her miserble self-fufillment.
1) Kid: "HEY MOM!!"
Mother: "Speak properly, junior. Use 'Mother' instead of 'Mom,' so I can brag to my friends like a cunt what a sophisticated and trained little boy I have.
a person who gives birth to you then leaves you with your pops cause she hates you and your father so much. A person whos not really a mother and hates her kid.