Here's what rhymes with tobaccum.
sachem Words that almost rhyme with tobaccum
blacken bracken wagon dragon slacken flagon datum talcum maxim chasm fathom madam spasm tandem madame plasm tantum bantam pablum handsome random platinum stratum amalgam phantom ransom magnum sanctum tantrum hansom macadam phantasm transom cytoplasm neoplasm gladsome sphagnum substratum nonrandom tarmacadam memorandum protoplasm enthusiasm iconoclasm