ÆNIGMA, denotes any dark saying, wherein some well-known thing is concealed under obscure language. The word is Greek, ἀνίγματος, formed of ἀνίγματος, obscure innuere, to hint a thing darkly, and of ἄν, an obscure speech or discourse. The popular name is riddle; from the Belgic raeden, or the Saxon aræthan, to interpret. Fa. Bouhours, in the memoirs of Trevoux, defines an ænigma, A discourse, or painting, including some hidden meaning, which is proposed to be guessed.