Where does “penacho” come from?
penacho (Portuguese) comes from Italian pennacchio, from Vulgar Latin pinnaclum, from Latin pinnāculum, from Latin Pinna, from Latin penna, from Proto-Italic petnā, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.
penacho (Portuguese): panache; a bird’s tuft
Ancestry of “penacho”, step by step