ETYM Said to be from Portu. doudo silly, foolish (cf. Booby); this is from Prov. Eng. dold, the same word as Eng. dolt.
(Informal) Someone whose style is out of fashion; SYN. fogy, fogey, fossil, dotard.

Extinct bird Raphus cucullatus formerly found on the island of Mauritius, but exterminated before the end of the 17th century. Although related to the pigeons, it was larger than a turkey, with a bulky body and very short wings and tail. Flightless and trusting, it was easy prey to humans.
Extinct heavy flightless bird of Mauritius related to pigeons; SYN. Raphus cucullatus.