Where does “schermatura” come from?

schermatura (Italian) comes from Italian schermare, from Italian schermo, from Italian schermire, from Frankish skirmijan, from Proto-Indo-European sḱer- — to caw, crow.

schermatura (Italian): screening (all senses)

Definitions

screening (all senses)

Ancestry of “schermatura”, step by step

Step	Language	Word	Meaning
1	Italian	schermare	To screen in
2	Italian	schermo	screen; first-person singular present indicative...
3	Italian	schermire	To protect or shield
4	Frankish	skirmijan	to shelter; to protect, defend
5	Proto-Indo-European	sḱer-	to caw, crow

Every word from Proto-Indo-European sḱer- →Every word from Frankish skirmijan →Every word from Italian schermire →