(fashion, obsolete) Alternative form of dudou: a traditional Chinese bodice or bib.

(organic chemistry) The zwitterion (2S)-3-(1H-imidazol-4-yl)-2-(trimethylammonio)propanoate related to histidine

validation

A construction in parties and celebrations which appears to be (and often partially consists of) a large cake, but which really conceals a person inside who will jump out to surprise the partygoers