Rhombus

//ˈɹɑːmbəs// noun

Definitions

Noun
  1. 1
    A parallelogram having all sides of equal length.
  2. 2
    a parallelogram with four equal sides; an oblique-angled equilateral parallelogram wordnet
  3. 3
    A parallelogram having all sides of equal length.; The rhombus diamond, as one of the suits seen in a deck of playing cards ( or ).
  4. 4
    In early Greek religion, an instrument whirled on the end of a string similar to a bullroarer.

    "The Greeks also used an instrument called a rhombus, or witches' wheel. As the wheel spun round, it was thought that influence was gained over certain people or circumstances."

  5. 5
    Any of several flatfishes, including the brill and turbot, once considered part of the genus Rhombus, now in Scophthalmus. archaic

    "the greedy Tuberon or Shark arm'd with a double row of venemous teeth pursues them, directed by a little Rhombus, Musculus or pilot-fish that scuds to and fro to bring intelligence [...]."

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  1. 6
    Snails, now in genus Conus or family Conidae. archaic

Etymology

Learned borrowing from Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”). Doublet of rhomb and rhumb.

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