fishtail

fishtail

v. t.
  1. to slow down by moving the tail sideways, of an airplane. (aeronautics)

fishtail

v. i.
  1. to have the rear end skid from side to side, out of control: -- said of automobiles or other vehicles.

Phrases & Compounds
Fish-tail burner
a gas burner that gives a spreading flame shaped somewhat like the tail of a fish.
Fish-tail propeller
a propeller with a single blade that oscillates like the tail of a fish when swimming.