skid fin: Meaning and Definition of

skid' fin"

Pronunciation: [key]
— Aeron. Aeron.
  1. an upright projection or fin, positioned from leading edge to trailing edge in the center of the upper wing of some early airplanes and used to retard skidding.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.