My dictionary came up with this;
"Noun 1. doornail - a nail with a large head; formerly used to decorate doors".
But the software 'Clue', brings up "the pin wich the doorhammer stikes".
Why it's more dead than other objects? ..does any of the dictionarys actually know what it is, or are they just guessing? ..and what is a doorhammer??
This might be one of the most complex questions in mankind, so it will be interesting to see if anyone here 'nails' it