The outer portion of a nut (as opposed to the threads inside). / A head (for a doll, puppet, etc.) made out of a nut.

plural of Jesus nut

(aviation, slang) The nut that holds the main rotor to the mast of some helicopters. / (slang, figuratively) A single point of failure with catastrophic consequences.

plural of nut butter

Any of the pine trees that bear pine nuts.

plural of nut pine

plural of mummy nut

Nuts left over in trees after harvesting.

Alternative form of nuthouse

The nut of the coquito palm.