buccaneer

English buccaneer comes from French boucanier, from boucan ("a Tupi-style grill") and the verb boucaner, "to smoke or broil meat and fish." Boucan itself traces back to Old Tupi moka'ẽ or mboka'ẽ, meaning "wooden grill." The -eer ending, from French -ier, ultimately goes back through Latin -ārius to Proto-Indo-European.

The word started with people who smoked meat over a wooden grill in the Caribbean, and by surface analysis it's simply "boucan" plus "-eer," someone who does that grilling. From there it came to name the hunters and adventurers who used that method, and eventually the sea-raiders we now call buccaneers.

The suffix -eer traces to the same root, via Latin -ārius, found in many English agent-noun endings like -ary; the facts here don't support a specific cognate word beyond this shared suffix history.