It is the member of the Canadian shapes pipes.
The Billiard is characterized by a fairly cylindrical bowl, canted very slightly forward, with a round shank, roughly as long as the bowl is tall, and either a tapered or saddle stem that makes up roughly half the overall length of the pipe. The Lovat is similar to a Billiard, with a slim shank that is 1.25-2 times the height of the bowl. The Lovat is always fitted with a short saddle stem. A Liperpool can be thought of as a Lovat with a tapered stem.