Meaning of “fat finger” in the English Dictionary

"fat finger" in English

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fat fingernoun [ U ]

uk /ˌfæt ˈfɪŋ.ɡər/ us /ˌfæt ˈfɪŋ.ɡɚ/ informalUK
verb [ T ] uk us informalUK

to press the wrong button by accident when you are using a computer keyboard:

I thought the computer wasn't working but I must have fat-fingered my password.
adjective uk us informalUK

fat-fingered office workers

(Definition of “fat finger” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)