driftpiece
/ˈdrɪftpiːs/Definitions
1. noun
A fragment of an iceberg or a piece of a floating mass of ice that breaks off and is carried away by currents.
“The research team studied the different types of driftpieces found in the Arctic Ocean.”
2. noun
A detached piece of a floating structure or debris.
“A piece of the old dock had broken off and was now floating in the water as a driftpiece.”