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nutshell

1 ENTRIES FOUND:
nutshell /ˈnʌtˌʃɛl/ noun
plural nutshells
nutshell
/ˈnʌtˌʃɛl/
noun
plural nutshells
Britannica Dictionary definition of NUTSHELL
[count]
: the hard outer shell of a nut

in a nutshell

: very briefly