That dynamic,
unique, juggling, complex motion of boobs as a
woman jumps, jogs, or walks. The word saves people from saying 'movement of boobs', a rather
awkward phrase that usually needs awkward hand motion to get your point across in public.
ex)
A: Do you remember the boobement of
Angelina Jolie at the end of Tomb Raider?
B: Yeah, but I personally
think the boobement of Pamela on Baywatch had more impact on the
general audience.