planeshear
/ˈpleɪnʃɪə/(also plansheer) Shipbuilding
noun
The outermost plank or series of planks covering the gunwale or the heads of the frames in a wooden ship.
- Also used loosely of the gunwale itself..
Origin
Early 17th century; earliest use found in Treatise on Shipbuilding. Alteration of plancher, perhaps after plane; in later use, perhaps also after sheer.