an incorrectly minted coin, often valued by collectors
FIDO in American English
(ˈfaidou)
noun
Aeronautics
a system for evaporating the fog above airfield runways by the heat from burners
Word origin
[1940–45; f(og) i(nvestigation) d(ispersal) o(perations)]This word is first recorded in the period 1940–45. Other words that entered Englishat around the same time include: redline, set-aside, silkscreen, snorkel, zap
Examples of 'fido' in a sentence
fido
Fido can be fed and his diet changed from afar with a smartphone.
Times, Sunday Times (2015)
Banks and colleagues decided to see if a faux fido might offer some comfort.