(chiefly US, idiomatic, military, weaponry) A nonfunctional imitation of a gun or of a piece of artillery, typically made of wood and usually intended to deceive enemy forces into overestimating one's available firepower.

A two-dimensional barcode, typically used to link to a website.

plural of Quaker gun

plural of sine qua non

A form of roller hockey played on four-wheeled roller skates.

A roller skate with four wheels, two either side of the foot.

plural of QR code

(algebraic number theory) A number field that is an extension field of degree two over the rational numbers.

(medicine, usually plural only) Rough divisions of the abdominal cavity formed by placing the umbilicus at the center of the horizontal and vertical dividing lines.

quadrille paper