1) Tiracchāna (p. 303) Tiracchāna ...tiraccha, tiriyaŋ, tiro] an animal
Ti or Tri means Three.
Tiracchana means an animal, which an alive who knows basically only THREE things -
To eat
To sleep, and
To have sex.
If you are living for only 3 things, you are called ANIMAL.
(just sharing)!