French pignon

← French noix de pin (link)

← French avoir pignon sur rue (link)

← French peigne (suffix)

← French on (suffix)

← Latin (mention)

← Latin pinna (mention)

← Old Occitan pinhon (mention)

← Old Occitan pinha (mention)

→ English pinion (borrowed)

→ Spanish piñón (borrowed)

→ Romanian pinion (borrowed)