[ 'lɒzɪn(d)ʒ ]
■ noun
1》 a rhombus or diamond shape.
↘ Heraldry a charge in the shape of a solid diamond.
2》 a small medicinal tablet, originally diamond-shaped, for dissolving in the mouth.
Origin
ME: from OFr. losenge , prob. derived from the base of Sp. losa , Port. lousa 'slab', late L. lausiae (lapides) 'stone slabs'.