CLAY Meaning of CLAY in English I. ˈklā biographical name Henry 1777-1852 American statesman & orator II. biographical name Lucius Du Bi·gnon du̇-ˈbin-yən 1897-1978 American general Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003