U5136850 (ŭp′do͞o)n.pl.up·dos Any of various hairstyles in which the hair is gathered together and secured to the back or top of the head, often in elaborate arrangements, as for a wedding or other formal occasion.[up + do, hairdo.]
up•do
(ˈʌpˌdu)
n., pl. -dos. an upswept hairdo. [1935–40; up (swept) + (hair) do]