See clod in Webster's New World Roget's A-Z Thesaurus II
noun
An irregularly shaped mass of indefinite size:
chunk, clump, gob1, hunch, lump1, nugget, wad. (Informal) hunk. See partA mentally dull person:
blockhead, chump1, dolt, dullard, dummkopf, dummy, dunce, numskull, thickhead. (Slang) dimwit, dumbbell, dumbo. See ability
Learn more about clod