The Collaborative International Dictionary of English v.0.48:

Well-set \Well"-set`\, a.
   [1913 Webster]
   1. Properly or firmly set.
      [1913 Webster]

   2. Well put together; having symmetry of parts.
      [1913 Webster]

WordNet (r) 3.0 (2006):

well-set
    adj 1: strongly and firmly constructed; "a well-knit argument";
           "a well-knit theatrical production"; "well-knit
           athletes"; "a sailor short but well-set"- Alexander
           Hamilton [syn: well-knit, well-set]

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "well-set":
   able-bodied, athletic, balanced, brawny, broad-shouldered, burly,
   coequal, confirmed, coordinate, deep-dyed, deep-engraven,
   deep-fixed, deep-grounded, deep-laid, deep-rooted, deep-seated,
   deep-set, deep-settled, dyed-in-the-wool, embedded, embossed,
   engrafted, engraved, entrenched, equal, equilateral, established,
   etched, eurythmic, even, finished, firmly established, graven,
   harmonious, implanted, impressed, imprinted, indelibly impressed,
   infixed, ingrained, ingrown, inveterate, inwrought,
   long-established, muscle-bound, muscular, old-line, on a rock,
   on bedrock, proportioned, regular, rooted, set, settled, sinewy,
   stabilized, symmetric, thewy, thickset, uniform, vested,
   well-balanced, well-built, well-established, well-founded,
   well-grounded, well-knit, well-set-up, well-settled, wiry