{ Cran"nog (kr?n"n?g), Cran"noge (kr?n"n?j) }, n. [From Celtic; cf. Gael. crann a tree.] One of the stockaded islands in Scotland and Ireland which in ancient times were numerous in the lakes of both countries. They may be regarded as the very latest class of prehistoric strongholds, reaching their greatest development in early historic times, and surviving through the Middle Ages. See also Lake dwellings, under Lake. Encyc. Brit.