BRUNSBUTTEL and BRUNSBUTTELKOOG, a sea port of Germany, in the Prussian province of Schleswig-Holstein, on the northern bank of the Elbe, 6om. N.W. of Hamburg. Com bined population (1933) Brunsbiittel is the western ter minus of the Kiel canal, which is closed there by double locks. There is also an inner harbour, I,64oft. by 656ft., and a coaling station.