1) Born in Germany 2) Castle moat 3) Composer Lukas 4) Conductor lukas 5) Defensive ditch 6) Ditch or moat 7) Echoi composer 8) Moat 9) Norwegian surname 10) Time Cycle composer Lukas 
ditch, moat, trench or canal
waterfall(s)
Meaning as a surname: Ditch or Roman road called the Fosse Way.
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The USS Foss was an American Buckley Class escort destroyer of 1400 tons displacement launched in 1943. The USS Foss had a top speed of 26 knots and carried a complement of 220. She was armed with three 3 inch guns; two 40 mm anti-aircraft guns; six 20 mm anti-aircraft guns; depth charge throwers and three 21 inch torpedo tubes in a triple mount.
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born 1922, U.S. pianist, conductor, and composer; born in Germany.