|Origin:||bondir, from Vulgar Latin bombitire 'to hum', from Latin bombus; BOMB1|
1 [intransitive always + adverb/preposition]
to run with a lot of energy, because you are happy, excited, or frightened
bound up/towards/across etc
Suddenly a huge dog came bounding towards me.
if a country or area of land is bounded by something such as a wall, river etc, it has the wall etc at its edge:
a yard bounded by a wooden fence
The US is bounded in the north by Canada and in the south by Mexico.