A Y-shaped stick having an elastic strap attached to the prongs, used for flinging small stones. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "slingshot" in a sentence
"Maybe he used a slingshot from the next building???"
"Make a slingshot from a about a 3/4 forked limb, then go to tie place and geta thrown out old innertube."
"The slingshot is the current ride I keep watching and wondering how far a person would fly if the ropes snapped."