Lucius Clay lu·ciusc·lay uncommon noun 1. United States general who commanded United States forces in Europe from 1945 to 1949 and who oversaw the Berlin airlift (1897-1978) SynonymsClayLucius ClayLucius DuBignon Clay Related words Broader terms general WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.