寄生蟲

to mail; to send by post; to entrust; to place in someone's care; to reside temporarily; to depend on; to attach oneself to

To grow, give birth, produce, or be born; to live or be alive; life; raw or uncooked; to arise or occur; student; a person's livelihood.

Insects, worms, or other crawling creatures; can refer to animals generally in ancient usage; also used figuratively for a contemptible person or as a surname.