rotund in WordNet English dictionary

1. excessively fat
   "a weighty man"
   corpulent  obese  weighty  rotund 
   
2. (of sounds) full and rich
   "orotund tones"; "the rotund and reverberating phrase"; "pear-shaped vowels"
   orotund  rotund  round  pear-shaped 
   
3. spherical in shape
   rotund