Definition of bound:
(n) :
(often used in plural) The border of a territory, which one must
cross in order to enter or leave the territory; a
value which is known to be greater or smaller than a given
set of values
"I reached the northern bound of my
property, took a deep
breath, and walked on."
(v) :
to
surround a territory; to move by jumping
"nebraska, Missouri, Oklahoma and Colorado bound Kansas."
(adj) :
Ready,
prepared; ready to start or go (to); moving in the direction (of)
"is that message bound for me?"