"lets go to the mountains tomorrow, i gotta try my new atv  "dude, your atv rocks, where did u get those wheels""
an atv [also known as quad] is a really cool 4-wheel bike that is all terrain (you can go everywhere with it, water, mud, snow, ice,etc)
""lets go to the mountains tomorrow, i gotta try my new atv  "dude, your atv rocks, where did u get those wheels""" What is the definition of "atv"?