Where does “poso” come from?

poso (Spanish) comes from Spanish posar, from Latin pausāre, from Latin pauso, from Latin pausa, from Ancient Greek παῦσις, from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

poso (Spanish): dregs, grounds; trace, remnant

Definitions

dregs, grounds; trace, remnant

Ancestry of “poso”, step by step

Step	Language	Word	Meaning
1	Spanish	posar	to pose; to stay or lodge in a habitation; to...
2	Latin	pausāre	—
3	Latin	pauso	I halt, cease, pause; I rest in the grave
4	Latin	pausa	a pause, halt, stop, cessation, end
5	Ancient Greek	παῦσις	stopping, ceasing
6	Ancient Greek	-σῐς	"suffix forming nouns"
7	Ancient Greek	-τις	retained after dentals
8	Proto-Indo-European	-tis	Derives abstract/action nouns from verb roots

Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek παῦσις →