One who kills or murders one's father; a patricide
The murder of a child by a parent; filicide.
The murderer of a child: a person who has committed infanticide.
The murder of an infant.
The criminal offence of killing of a newborn, committed by its mother while psychologically disturbed by the effects of childbirth or lactation, not regarded as murder.
The killing of a young, immature animal by a mature adult of the same species.