The male reproductive organ; the testicles.
The liver is the largest internal organ. Skin is the largest external organ, however, it is considered the human's largest organ.
It is an internal, female, organ.
Lungs
Skin
The penis?
toes
It is the external sex organ on a (fe)male.
The study of the male external sexual organ known as the penis.
external organ
This is called the male genitalia. It can be further broken down into the penis and the scrotum containing the testis.
external organization
The urethra passes the urine out of the body.
Anther is the male organ.
The male reproductive organ is the penis.
The mammary glands are an external female reproductive organ.
Leaf is an external organ of the plant