fête champêtre
Concise Oxford English Dictionary © 2008 Oxford University Press:
fête champêtre /ˌfɛt ʃɒ̃ˈpɛtr(ə)/
▶noun (pl. fêtes champêtres pronunc. same) an outdoor entertainment such as a garden party.
– origin Fr., lit. ‘rural festival’.
'fête champêtre' also found in these Oxford entries:

