A large, yet mostly mucus, booger that you get when you stick your finger up your nose and think you have a winner. Typically the solid portion of the booger comes out on your fingernail, dragging behind it a long gooey trail of snot.
WOW! Take a look at this nose oyster I just pulled!
20👍 3👎
a glob of mucus.
see snot rocket.
"just gulped a nose oyster in class today"