1. An oblique-angled equilateral parallelogram.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• rhobus,
• rombus,
• rhombas,
• rhoumbus,
• jombus,
• rhamus,
• rhubhus,
• rhibus,
• rhihbus,
• rhombix,
• rhombis,
• rhomus,
• rhubus,
• chomous,
• rhodnus,
• rombos,
• rhombe,
• rambus,
• shomus,
• Brombug

• rhombic.

The adjective form of the word "rhombus" is "rhombic".