n. pl. rhom·bus·esor rhom·bi (-bī)
An equilateral parallelogram, especially one having oblique angles. Also called rhomb.
[Late Latin, from Greek rhombos, bullroarer, lozenge-shaped flatfish, rhombus (a rhombus being so called in reference to lozenge-shaped wooden slat of a bullroarer), from rhembesthai, to roll about, go round and round; see wer-2 in the Appendix of Indo-European roots.]
(click for a larger image)rhombus
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