Rhombus

Noun

1. A parallelogram having all sides of equal length. .mw-parser-output .defdate{font-size:smaller} The rhombus diamond, as one of the suits seen in a deck of playing cards ( or ).
2. The rhombus diamond, as one of the suits seen in a deck of playing cards ( or ).
3. In early Greek religion, an instrument whirled on the end of a string similar to a bullroarer.
4. Any of several flatfishes, including the brill and turbot, once considered part of the genus Rhombus, now in Scophthalmus.
5. Snails, now in genus Conus or family Conidae.