noun, masculine/kompaˈɲeɾo/plural: compañeros
companion (someone with whom one spends time or keeps company); mate, colleague; (with a qualifier) fellow X, classmate, coworker, etc. (someone with whom something is shared); fellow member of a political group; comrade; teammate (one who is on the same team); mate, partner (matching item in a set)
“compañero de viaje” — travel companion
Synonyms: colega[coworker]]>, compañero de equipo
Inherited from Old Spanish compannero, from companna (“company, entourage”). Analyzable as compaña (“company”) + -ero. Compare Portuguese companheiro.