bouffant (adj.) Look up bouffant at Dictionary.com
1869, in dressmaking, "puffed out, bulging," from French bouffant, present participle of bouffer "to puff out," from Old French bouffer (12c.), from Vulgar Latin *buffare, probably ultimately imitative of puffing. As a noun by 1870. Earlier as a French word in English. First used of hairdo styles 1955.