Where does “chifrão” come from?

chifrão (Portuguese) comes from Portuguese chifre, from Spanish chifle, from Spanish chiflar, from Old Spanish chiflar, from Vulgar Latin sifilare.

Ancestry of “chifrão”, step by step

StepLanguageWordMeaning
1Portuguesechifrehorn, antler
2Spanishchiflewhistle
3Spanishchiflarto whistle; to whistle at
4Old Spanishchiflar—
5Vulgar Latinsifilare—
Every word from Vulgar Latin sifilare →Every word from Old Spanish chiflar →Every word from Spanish chiflar →