pred. a. Crazy; loony; insane; batty; -- used in a predicate position, ususually in phrases such as
interj. An expression of disapproval, defiance, or displeasure, as in: “Ah, nuts! My knife just broke.” [ slang ] [ PJC ]
n.
in a nutshell
To be in a nutshell
To lie in a nutshell,