Webster's Dictionary 
(1): ( n.) The contraction of the diaphragm and abdominal muscles to evacuate feces or urine.
(2): ( n.) A striving; an effort; a conatus.
(3): ( n.) The periodic procreative desire manifested in the spring by birds, etc.
The Nuttall Encyclopedia 
A Trojan youth who accompanied Æneas into Italy, and whose friendship for Euryulus is so pathetically immortalised by Virgil in the ninth book of the "Æneid."