Where does “calceus” come from?

calceus (Latin) comes from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

calceus (Latin): shoe

Definitions

Step	Language	Word	Meaning
1	Latin	calx	limestone; chalk; the finish line
2	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

calceus — Etymology, Origin & Word History | Etymology Explorer