coffer
cof.fer \'ko.-f*r, 'ka:f-*r\ n [ME coffre, fr. OF, fr. L cophinus basket, fr. Gk kophinos] 1: CHEST, BOX; esp : a strongbox for valuables 2: TREASURY, EXCHEQUER - usu. used in pl. 3a: the chamber of a canal lock 3b: CAISSON 3c: COFFERDAM 4: a recessed panel in a vault, ceiling, or soffit