Meaning of nutty

nut•ty

1. abounding in or producing nuts.
2. nutlike, esp. in flavor.
3. a nutty suggestion.
1. silly or ridiculous:a nutty suggestion.
2. eccentric; queer.
3. insane.
4. very or excessively interested, excited, or the like:He's nutty about Mexican food.
4. full of flavor or zest; lively; stimulating; meaty: He offered several rich, nutty ideas on the subject.