Where does “disgravio” come from?

disgravio (Italian) comes from Italian disgravare, from Italian dis-, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “disgravio”, step by step

Step	Language	Word	Meaning
1	Italian	disgravare	—
2	Italian	dis-	dis
3	Latin	dis-	asunder, apart, in two; reversal, removal;...
4	Latin	calceus	shoe
5	Latin	calx	limestone; chalk; the finish line
6	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Ancient Greek χάλιξ →Every word from Latin dis- →Every word from Latin calx →