fachidiot
/ˈfɑkɪdiˌoʊt/noun
High School
1
A (narrow) specialist expert who is ignorant outside of their specialty, or who only looks at problems through the (blinkered) lens of their own specialty.
#rare
A (narrow) specialist expert who is ignorant outside of their specialty, or who only looks at problems through the (blinkered) lens of their own specialty.