Where does “gear” come from?

gear (Old Portuguese) comes from Latin gelō, from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

Ancestry of “gear”, step by step

StepLanguageWordMeaning
1Latingelō—
2Latin-ōsuffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
3Proto-Indo-European-ōDerives nouns from roots

Words derived from “gear”

Every word from Proto-Indo-European -ō →Every word from Latin -ō →Every word from Latin gelō →