A malformed animal or plant; (Medicine) a fetus, neonate, or individual with a gross congenital malformation, usually of a degree incompatible with…

A severely malformed creature, monster. Also: a hermaphrodite.

A deformed animal; a monster. Obsolete. rare.

A severely malformed birth; a monstrous or marvellous creature; (also) monstrous birth as a phenomenon.

An abortive delivery, a miscarriage. Also concrete: a miscarried fetus; a stillborn child, animal, etc. Now archaic (usually figurative).

With plural agreement. Severely malformed embryos or births.

Malformation or disease affecting an embryo or fetus; an instance of this.

= thalidomide child n.

one born deformed through the effects of thalidomide.