Lozenge
LOZ'ENGE, noun [Gr. oblique, and a corner.]
1. Originally, a figure with four equal sides, having two acute and two obtuse angles; a rhomb.
2. In heraldry, a four-cornered figure, resembling a pane of glass in old casements.
3. Among jewelers, lozenges are common to brilliants and rose diamonds. In brilliants, they are formed by the meeting of the skill and the star facets on the bezil; in the latter, by the meeting of the facets in the horizontal ribs of the crown.
4. A form of medicine in small pieces, to be chewed or held in the mouth till melted.
5. In confectionary, a small cake of preserved fruit, or of sugar, etc.