Where does “atricapillus” come from?

atricapillus (Latin) comes from Latin capillus, from Latin caput, from Proto-Italic kaput, from Proto-Indo-European káput, from Proto-Indo-European kap- — to seize, hold.

atricapillus (Latin): black-haired

Definitions

black-haired

Ancestry of “atricapillus”, step by step

atricapillus traces back through 3 separate lines of ancestry.

via Latin capillus

Step	Language	Word	Meaning
1	Latin	capillus	a hair; hair; a head of hair: locks, tresses
2	Latin	caput	head; headlike protuberance on an organ or body...
3	Proto-Italic	kaput	head
4	Proto-Indo-European	káput	head
5	Proto-Indo-European	kap-	to seize, hold

via Ancient Greek μελάνθριξ

Step	Language	Word	Meaning
1	Ancient Greek	μελάνθριξ	black-haired
2	Ancient Greek	Μέλας	dark in color; sometimes so dark as to lack color, black
3	Ancient Greek	black	—

via Latin āter

Step	Language	Word	Meaning
1	Latin	āter	dull black (as opposed to niger, shining black); dark

Every word from Proto-Indo-European kap- →Every word from Proto-Indo-European káput →Every word from Proto-Italic kaput →