n.1 a rhombus or diamond figure.
2 a small sweet or medicinal tablet, orig. lozenge-shaped, for dissolving in the mouth.
3 a lozenge-shaped pane in a window.
4 Heraldry a lozenge-shaped device.
5 the lozenge-shaped facet of a cut gem.
Derivatives:
lozenged adj. (in sense 4). lozengy adj.
Etymology: ME f. OF losenge, ult. of Gaulish or Iberian orig.