大头dàtóu 1.套在头上的一种假面具。{mask} 2.指民国初年发行的铸有袁世凯头像的银元。{silver coin minted in the early years of the Republic with the head of Yuan Shikai on the obverse side} 3.(～ㄦ{dàtóur})大的那一端;主要的部分{bigger end; major part}: 抓～ㄦ。{aim at the major part; focus on the major problem} 4.冤大头{squanderer; dupe}: 拿～(拿人当做冤大头)。{sponge off a spendthrift; dupe sb.}