I. ˈkalks noun
( plural calxes -lksə̇z ; or cal·ces -lˌsēz)
Etymology: Middle English cals powder produced by calcining a mineral, from Latin calx lime — more at chalk
: the friable residue (as a metal oxide) left when a mineral or metal has been subjected to calcination or roasting : calcine
II. noun
( plural cal·ces -lˌsēz)
Etymology: Latin — more at calk
: heel