What's the noun for rhombs? Here's the word you're looking for.
rhombus
(zoology, now rare) Any of several flatfishes, including the brill and turbot, once considered part of the genus Rhombus, now in Scophthalmus. [from 16th c.]
(zoology, archaic)Snails, now in Conus or Conidae.
(geometry) A parallelogram having all sides of equal length. [from 16th c.]
“The artist skillfully painted a large rhomboid on the canvas, showcasing the mesmerizing qualities of the four-sided figure with its unequal sides and parallel lines.”
“The indistinct boundaries between these dolomite rhombs and the calcite suggests that the latter has been partially dolomitized.”
“Tiny adularia rhombs are also present on the matrix of a specimen showing an unusual association of wire gold with scheelite.”
“Concurrent with this, the entire pectinirhomb becomes greatly protuberant along a large, thinwalled ridge spanning the incurrent and excurrent half rhombs.”