Where does “segundín” come from?

segundín (Spanish) comes from Spanish Segundo, from Latin secundus, from Latin sequor, from Proto-Italic sekʷōr, from Proto-Indo-European sékʷetor, from Proto-Indo-European sekʷ- — to follow; to see; to say.

Ancestry of “segundín”, step by step

Step	Language	Word	Meaning
1	Spanish	Segundo	second
2	Latin	secundus	second, the ordinal number after prīmus and...
3	Latin	sequor	I follow, come or go after
4	Proto-Italic	sekʷōr	follow, come/go after
5	Proto-Indo-European	sékʷetor	to be following
6	Proto-Indo-European	sekʷ-	to follow; to see; to say

Every word from Proto-Indo-European sekʷ- →Every word from Proto-Indo-European sékʷetor →Every word from Proto-Italic sekʷōr →