This is the 3752nd most frequent French word.
sq
The French word "sq" is an abbreviation for "square," meaning a public square or plaza.
In this usage, 'carré' ('sq') describes the shape of the lenses being square.
Les lunettes ont des verres carrés.
The glasses have square lenses.
Here, 'carré' (abbreviation 'sq') references a geometric shape, specifically a square.
Je mets un carré dans le coin de la feuille.
I place a square in the corner of the paper.
The term 'carré' ('sq') refers to the unit of measurement representing the square area.