1. Usually describes a large person who is fat but has a large frame to carry it
   "The thickset farmer had arms like tree trunks";
   - fleshy, heavy, heavyset
    
2. Having a short and solid form or stature
   "a thickset young man";
   - compact, heavyset, stocky, thick
    
3. Planted or growing close together
   "thickset trees"

See also: concentrated, fat, little, short