(law) Any of various sexual deviations that, at one time or another, have been considered to be so unnatural as to be illegal.

plural of aggregate fruit

(botany) A fruit that develops from the fusion of more than one carpel within a single flower, as for instance, a raspberry.

(computing) A client application used by an end user, typically for a network protocol such as HTTP or FTP.

(law) An entity designated by a publicly-traded corporation to keep track of the ownership of the corporation's stocks and bonds

A governmental agency that is devoted to the information gathering (known in the context as "intelligence") for purposes of national security and defense.

(construction) An expanding agent used to produce a gas by chemical or thermal action, or both, in the manufacture of hollow or cellular materials.

(intransitive, idiomatic) To waste effort on a futile project.

Unequivocally and intransigently opposed to.

(idiomatic, in response to another person) That is very true.