look up any word, like the eiffel tower:
a Famous Radio D.J. in Los Angeles. Tweety Bird in Looney Toons. Used by young hispanic children to describe the male genitilia.
child: "Mira, mami, a ese nino se le ve su piolin".
"El Chato tiene un piolon muy grande."
"A Letty le gusta chupar el Piolin"
by MariAntonia July 16, 2006
When a hair (preferably a thick strand, but not too thick), sticks out.
I pulled Davids Piolin super hard because he pissed me off.
by Jaime H. October 22, 2005