noun
(dance) A dance originating in the mid-1700s with four couples forming a square, rather much like the modern square dance.
(music) The music for this dance.
(card games) A Spanish trick-taking card game from the 1700s played with a 40-card deck.
A choreographed dressage ride, commonly performed to music, with a minimum of four horses.
verb
(intransitive) To dance the quadrille.
adjective
(of paper) Marked with squares.
noun
Quadrille ruled graph paper, quad paper.
noun
(mathematics) A square tiling of the plane.