QUARREL  . (1) (Through Fr. querelle from

Lat. querela, complaint), originally a complaint against a person, particularly a legal accusation or charge, hence a ground or cause for complaint or anger, or, more generally, an outbreak of anger or violent dispute . (2)H(Through O . Fr. quarrel or quarel, from med . Lat. quadrellus, diminutive of quadrus, square), a heavy short bolt or arrow with a square head, used in a cross-bow or arbalest . In architecture this term (and also the doublet " quarry ") is applied to any square-shaped opening, in the Beauchamp Roll to the quatrefoils in Perpendicular windows, sometimes to squares of paving, but most commonly to fhe lozenge-shaped pieces of glass in lead casements (see GLASS, STAINED) .