Where does “columa” come from?

columa (Old Irish) comes from Latin columna, from Proto-Italic kolamen, from Proto-Indo-European ḱelH- — to freeze.

Ancestry of “columa”, step by step

StepLanguageWordMeaning
1Latincolumnacolumn, pillar; waterspout; column as in a book
2Proto-Italickolamen—
3Proto-Indo-EuropeanḱelH-to freeze

Words derived from “columa”

Every word from Proto-Indo-European ḱelH- →Every word from Proto-Italic kolamen →Every word from Latin columna →