IPA: /ʃæˈpoʊ/
KK: /ʃæˈpoʊ/
A type of headwear that is worn for protection or fashion.
She wore a stylish chapeau to the garden party.
Chapeau comes from Old French *chapeau*, meaning a hat or head covering. The word is derived from *cape* (meaning a covering or cloak), which is related to the Latin *cappa* (meaning a hood or cape).
Think of a 'covering' ('cape') for your head — that's what a chapeau is.