köken: From Middle French losange, losenge, from Old French losenge (“a drawn shape on fabric, rhombus”), of obscure origin. Perhaps ultimately from Gaulish *lausā (“flat stone, stone slab”). Alternatively, perhaps from earlier Old French losenge (“flattery, deceitful praise”), from the notion the shape was reminiscent of the square flat slabs of tombstones upon which fulsome epithets of undue praise…
köken: Inherited from Old Spanish losenja, from Old Occitan lauzenja, lausenga, from Old French losenge (“deception, flattery”), either from Frankish *lausungu (“deception, lying”), in which case cognate with English leasing (“lying, fraud, falsehood, deceit”); or, from Late Latin laudemia (with the ending by analysis with the opposite blasphemia), from Latin laus (“praise”).
köken: Borrowed from Russian ромб (romb), from Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”), from ῥέμβω (rhémbō, “to turn around”).