Definition of planksheer in English:

planksheer

(also plankshear)

noun

Shipbuilding
  • The outermost plank or series of planks covering the gunwale or the heads of the frames in a wooden ship; = planeshear. Also (now rare): planking forming a shelf below the gunwale in a man-of-war.

Origin

Early 19th century; earliest use found in The Edinburgh Advertiser. Alteration of planeshear after plank; compare sheer.

Pronunciation

planksheer

/ˈplaŋkʃɪə/