bouffant
Concise Oxford English Dictionary © 2008 Oxford University Press:
bouffant /ˈbuːfɒ̃/
▶adjective (of hair) styled so as to stand out from the head in a rounded shape. ▶noun a bouffant hairstyle.
– origin C19: from Fr., lit. ‘swelling’, pres. part. of bouffer.
'bouffant' also found in these Oxford entries:

