Where does “rastro” come from?

rastro (Latin) comes from Latin rastrum, from Latin radere, from Latin rado, from Proto-Italic razdō, from Proto-Indo-European rh₁d-dʰ-, from Proto-Indo-European reh₁d- — to scrape, scratch, gnaw.

rastro (Latin): dative singular of rāstrum; ablative singular of...

Definitions

dative singular of rāstrum; ablative singular of...

Ancestry of “rastro”, step by step

Step	Language	Word	Meaning
1	Latin	rastrum	rake, hoe, mattock
2	Latin	radere	second-person singular future passive indicative...
3	Latin	rado	I scrape, shave, scratch; I rub, smooth; I touch...
4	Proto-Italic	razdō	—
5	Proto-Indo-European	rh₁d-dʰ-	—
6	Proto-Indo-European	reh₁d-	to scrape, scratch, gnaw

Every word from Proto-Indo-European reh₁d- →Every word from Proto-Indo-European rh₁d-dʰ- →Every word from Proto-Italic razdō →