rhombus
From Longman Dictionary of Contemporary EnglishRelated topics: Shapes, patterns, Mathsrhombusrhom‧bus /ˈrɒmbəs $ ˈrɑːm-/ noun [countable] technicalCF a shape with four equal straight sides, especially one that is not a squareExamples from the Corpusrhombus• They are situated at the four points of a rhombus.Origin rhombus (1500-1600) Latin Greek rhombos