fi·​do | \ ˈfī-(ˌ)dō How to pronounce fido (audio) \
plural fidos

Definition of fido

: a coin having a minting error

Examples of fido in a Sentence

Recent Examples on the Web In addition to bringing fido, Amtrak customers riding Acela trains can reserve their seats in advance and see how full the train is before booking. Alison Fox, Travel + Leisure, "Pets Will Now Be Welcome on Amtrak's Weekday Acela Trains," 4 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fido.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of fido

1967, in the meaning defined above

History and Etymology for fido

freaks + irregulars + defects + oddities

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Statistics for fido

Last Updated

19 Mar 2021

Cite this Entry

“Fido.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2021.

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