Where does “corniculus” come from?

corniculus (Latin) comes from Latin cornus, from Latin cornu, from Proto-Indo-European ḱer-, from Proto-Indo-European kr̥-, from Proto-Indo-European ker- — army.

Ancestry of “corniculus”, step by step

Step	Language	Word	Meaning
1	Latin	cornus	cornel, dogwood; genitive singular of cornū
2	Latin	cornu	a horn, antler; a tusk; the horns of the moon
3	Proto-Indo-European	ḱer-	to grow, to make grow, to nourish; to plait,...
4	Proto-Indo-European	kr̥-	to turn, to bend
5	Proto-Indo-European	ker-	army

Every word from Proto-Indo-European ker- →Every word from Proto-Indo-European kr̥- →Every word from Proto-Indo-European ḱer- →