Haha (母) means "my mother." This term is used specifically when you are talking about your own mother to someone outside your family. When speaking directly to your mother or when referring to someone else's mother, the more polite form "okāsan" (お母さん) is generally used. Example: 私の母は料理が好きです。(Watashi no haha wa ryōri ga suki desu.) = My mother likes cooking.

自分(じぶん)の母親(ははおや)を、家族(かぞく)以外(いがい)の人(ひと)に話(はな)す時(とき)に使(つか)います。例(れい)：私(わたし)の母(はは)は料理(りょうり)が好(す)きです。