slingshot
noun
[ ˈslɪŋʃɒt ]
• a forked stick, to which an elastic strap (or a pair of elastic bands connected by a small sling) is fastened to the two prongs, typically used for shooting small stones; a catapult.
• the effect of the gravitational pull of a celestial object in accelerating and changing the course of another object or a spacecraft.
• "stars passing near a black hole might be ejected by a gravitational slingshot effect"
slingshot
verb
• forcefully accelerate through the effect of gravity.
• "the car would hit the first dip, then slingshot off the second rise"
