Third-person singular simple present indicative form of fuddle duddle

A condition or capability that a system, person or object has to satisfy, fulfill or comply with. / (computing) Any of the functions of a software system, described formally.

(mathematics) Any of class of special functions, usually denoted as two pairs of functions berₙ(x), beiₙ(x), kerₙ(x) and keiₙ(x) with variable x and given order number n. The former two functions berₙ(x) and beiₙ(x) respectively correspond to the real part and the imaginary part of the Kelvin differential equation's solution that can be expressed with the Bessel function of the first kind Jₙ(x), and the latter kerₙ(x) and keiₙ(x) correspond to those that can be expressed with the modified Bessel function of the second kind Kₙ(x).

(mathematics) Any of a class of functions that are solutions to a particular form of differential equation (a Bessel equation) and are typically used to describe waves in a cylindrically symmetric system.

Alternative spelling of fuddle-duddle

Alternative spelling of fuddle-duddle

(vulgar, slang, derogatory, Australia, New Zealand, UK) Term of abuse.

Alternative spelling of fuck-knuckle

(vulgar, slang) To actively sexually penetrate someone's mouth; to have vigorous oral sex. / (vulgar, slang) To sexually penetrate someone's eye socket.

an instance of skull-fucking