dodo

*dead as a dodo and *dead as a doornail; deader than a doornail

dead; no longer in existence. (*Also: as ~.) That silly old idea is dead as a dodo. When I tried to start my car this morning, I discovered that the battery was deader than a doornail.

See also: dead

go the way of the dodo and go the way of the horse and buggy

Fig. to become extinct; to become obsolete. The floppy disc has gone the way of the horse and buggy.

See also: way

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be as dead as a dodo  (informal)

if something is as dead as a dodo, it is not important or popular any more

Usage notes: The dodo was a large bird which could not fly and which does not exist any more.

Who cares about socialism any more? Socialism's as dead as a dodo. My hopes of becoming a professional gymnast are now as dead as a dodo.

See also: dead