Definition of squarest:
(n) :
(geometry) A polygon with four straight sides of equal length and four right angles; an equilateral rectangle; a regular quadrilateral.
(n) :
Something characterized by a square, or nearly square, form.
(n) :
A cell in a grid.
(n) :
A square piece, part, or surface.
(n) :
The front of a woman's dress over the bosom, usually worked or embroidered.
(n) :
(Canada, US) A dessert cut into rectangular pieces, or a piece of such a dessert.