Synonym of a few cards shy of a full deck

Alternative form of few cards shy of a full deck

(idiomatic, slang, vulgar) An important person within a small domain.

(US) A highly variable species of herbaceous perennial native to California and other parts of western North America, Epilobium canum, with showy flowers reminiscent of fuchsias

(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).

(mathematics) An element of the range of a function. (Or, employing the "machine" metaphor, it is one of the "outputs" of a function.)

(sports, aerial freestyle skiing) An aerialist maneuver consisting of 2 backflips in conjunction and simultaneous with two complete twists.

(sports, aerial freestyle skiing) An aerialist maneuver consisting of 3 backflips in conjunction and simultaneous with three complete twists.

A supply of honey, often created as a subsidy for beekeepers, and/or the funds used to purchase that supply. / Alternative form of honeyfund

(chiefly mathematics) A theorem (or, in non-mathematical fields, a commonly accepted hypothesis) considered to be of central importance to a specified field.