Morpheme
Square
Type
free base
Denotation
polygon with four straight sides of equal length and four right angles
Etymology
Middle English square, sqware, squyre; Old French esquarre, esquerre; Latin ex- + quadrō, from quadrus
Evidence
square, squared, squarely, squareness, squares, squaring, squarish
Notes
square, squad, and squadra are doublets
Doublet
Squad