Jetsam
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
Goods cast out from a ship by way of jettison, and which sink, being thus distinguished from flotsam, jettisoned goods which float, and ligan, jettisoned goods, bound to some buoyant substance.
1 Bl. Coram. 292.