Definitions
1.NounThe tail of a fish, or an object resembling this.
2.NounThe skidding of the back of a vehicle from side to side.
3.NounA kind of chisel with a flared blade.
4.NounEllipsis of fishtail palm.
5.VerbTo swing the back of a vehicle (originally an aircraft) from side to side."As we approached the runway, the pilot fishtailed slightly to reduce landing speed."
6.VerbTo cause the back of (a vehicle) to swing from side to side.
7.VerbTo move with the tail swinging from side to side in this way.