macle
noun
ma·cle ˈma-kəl 
1
: a twin crystal
2
: a flat often triangular diamond that is usually a twin crystal
macled
ˈma-kəld
adjective 
Word History
Etymology
French, wide-meshed net, lozenge voided, macle, from Old French, mesh, lozenge voided, of Germanic origin; akin to Old High German masca mesh — more at mesh
First Known Use
1798, in the meaning defined at sense 1