What is the meaning of Fishtail?

The tail of a fish, or an object resembling this.

The skidding of the back of a vehicle from side to side.

A kind of chisel with a flared blade.

Short for fishtail palm.

To swing the back of a vehicle (originally an aircraft) from side to side.

To cause the back of (a vehicle) to swing from side to side.

To move with the tail swinging from side to side in this way.

Source: wiktionary.org