Morpheme
Plank
Type
free base
Denotation
thick board, broad slab
Etymology
Middle English plank, planke; Old French planke, planque; Vulgar Latin planca, from palanca; Latin phalanga; Ancient Greek phálanx
Evidence
centerplank, gangplank, plank, plankage, plankboard, planked, planker, planking, plankless, planklike, plankowner, planks, plankway, plankwise, planky, replank, unplank
Notes
plank, phalanx, phalange, planch, planche, and plancha are doublets