Rhombus | Webster's Dictionary of the English Language

rhombus
rhombus, i, m., = ῥόμβος. I A magician’s circle , Prop. 2, 28, 35 (3, 25, 1); 3, 6, 26 (4, 5, 26);...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
rhombus
rhombus ī, m , ῥόμβος, a magician's circle, O., Pr.—A flatfish, turbot, H., Iu. ...

An Elementary Latin Dictionary
rhombus
A lozenge-shaped figure, having four equal sides, but its angles not right angles. ...

The Sailor's Word-Book