charivari

Concise Oxford English Dictionary © 2008 Oxford University Press:
charivari /ˌʃɑːrɪˈvɑːri/ (chiefly US also shivaree)

▶noun (pl. charivaris)

• 1 chiefly historical a noisy mock serenade, performed by a group of people to mock an unpopular person or to celebrate a marriage.

• 2 a series of discordant noises.

– origin C17: from Fr.