Webster's 1913 Dictionary
CRANNOG; CRANNOGE
Cran "nog (krn "ng ), Cran "noge (krn "nj ), n. Etym: [From Celtic; cf. Gael. crann a tree. ]
Defn: 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.
New American Oxford Dictionary
crannog
cran nog |ˈkranˌôg, -əg ˈkrænəɡ | ▶noun an ancient fortified dwelling constructed in a lake or marsh in Scotland or Ireland. ORIGIN early 17th cent.: from Irish crannóg, Scottish Gaelic crannag ‘timber structure, ’ from crann ‘tree, beam. ’
Oxford Dictionary
crannog
crannog |ˈkranəg | ▶noun an ancient fortified dwelling constructed in a lake or marsh in Scotland or Ireland. ORIGIN early 17th cent.: from Irish crannóg, Scottish Gaelic crannag ‘timber structure ’, from crann ‘tree, beam ’.
The Wordsmith Dictionary