in. [for the rear of a car] to whip back and forth like a fish moving its tail.
The Caddy fishtailed on the curb and almost spun around.It's easy to fishtail in wet weather.
fishtail
verb to cause the rear of an aeroplane or car to swerve from side to side US, 1927
fishtail
Of a vehicle, for its rear to slide erratically from side to side on the road (likened to a fish's tail moving back and forth). The roads are pretty icy today, and I saw a couple of cars fishtail coming around that corner.
fishtail
in. [for the rear of a car] to whip back and forth like a fish moving its tail. The caddy fishtailed on the curb and almost spun around.