pennacchio meaning in English

pendentive▼(triangular section of vaulting)
noun
[UK: pendˈentɪv] [US: pendˈentɪv]

plume [plumes]▼(cluster of feathers worn as an ornament)
noun
[UK: pluːm] [US: ˈpluːm]Mount Etna has erupted, sending lava and ash plumes into the Sicilian sky. = Il Monte Etna ha eruttato, spedendo pennacchi di lava e cenere nel cielo siciliano.