podoscaph
/ˈpɒdə(ʊ)skaf/Now historical and rare
noun
Originally: †a canoe-shaped float attached to the foot for moving on water (obsolete rare ). Later: a small boat propelled by pedals.
Origin
Mid 19th century; earliest use found in Chambers's Journal of Popular Literature. From podo- + ancient Greek σκάϕος hull of a ship from the same base as σκάϕη boat.