(simile, colloquial) Behaving in an eccentric, foolish, or kooky manner; very nutty.

Alternative spelling of nutty as a fruitcake

plural of nutbowl

(Canada, US) Alternative form of nutria

plural of nutria rat

plural of nutator

A mechanical or electronic device for gyrating a feedhorn, dipole, or radar about the axis of the reflector without changing its polarization.

(slang) Crazy, insane, unhinged.

plural of nutball

(informal) A crazy person.