The fourteenth letter of the Hebrew alphabet, נ symbolizes "a fish" (Aramaic).
Nun is written with the following letters: Nun, Vav, Nun-Sophit, which mean: the Light above, the Shechinah of the three primary forces hidden within the “Nun,” “the N” descending through “Vav” (spinal medulla) even through the final Nun in order to expand the Infinite Light below in the Ninth Sphere, the center of the Earth. In Yesod, the Solar Forces of Kether, Chokmah, and Binah (their Messiah or Solar-Light-Force), the Heir to the Throne (the Spinal Medulla) are hidden within Nun, the Sperm and the Ovum (the fish) that swims within the Mem, the waters of Yesod, the Ens Seminis.
Its Kabbalistic value is 50.