(physiology) A normal physical process that occurs in the body. / (euphemistic) An excretory function of an organism, usually the discharging of feces and urine.

Dated form of full of oneself.

(computing, database normalization) A functional dependency of an attribute on a superset of itself.

(computing, database normalization) A constraint between two sets of attributes in a relation.

(idiomatic) At the most extreme level; at full capacity.

(slang, idiomatic) An extreme level.

(electronics) A specific logical circuit that performs an addition operation on three bits.

plural of function key

(informal) One's decisions or actions will bring undesirable consequences only on oneself.

(idiomatic) mentally deranged; demented; insane.