noun /yar-d dar-ts/
A game commonly played by children and cocktail induced adults where colorful circles would be placed or drawn in the grass, and sharp dangerous dart like objects were thrusted at those circles in hopes to make it inside them for points. YarDarts have since been discontinued, in the classic fashion, due to their sharp dangerous components.
You should come over for our cocktail party this weekend, Jane. It'll be a gay old time as we'll be playing YarDarts until someone pokes an eye out.