Noun
ball used in playing billiards
Source: WordNetLater analysis by Thorne and Robert Forward showed that for certain initial trajectories of the billiard ball, there could actually be an infinite number of self-consistent solutions. Source: Internet
The "billiard ball" hypothesis, a product of Newtonian physics, argues that once the initial conditions of the universe have been established, the rest of the history of the universe follows inevitably. Source: Internet
The chicken would sit on items, such as a ringside bell, a man's bald head, a billiard ball, a football, a golf ball, and even a bomb, with various disastrous results. Source: Internet
Middle: the billiard ball emerges from the future, and delivers its past self a strike that averts the past ball from entering the time machine. Source: Internet
The last process imparts most of the neutron's energy to the proton, much like one billiard ball striking another. Source: Internet