periptery

Noun

 * 1) The region surrounding a moving body, such as the wing of a bird or a gliding aeroplane, within which cyclic or vortical motion of the air occurs.
 * 2) * F. W. (Frederick William) Lanchester, "Aerial Flight - Volume 1", Chapter IV, p.139 Wing Form and Motion in the Periptery
 * 3)  A building surrounded by a wing or row of columns.