The Collaborative International Dictionary of English v.0.48:

Jowl \Jowl\, v. t.
   To throw, dash, or knock. [Obs.]
   [1913 Webster]

         How the knave jowls it to the ground.    --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jowl \Jowl\ (joul or j[=o]l), n. [For older chole, chaul, AS.
   ceaft jaw. Cf. Chaps.]
   The cheek; the jaw. [Written also jole, choule, chowle,
   and geoule.]
   [1913 Webster]

   Cheek by jowl, with the cheeks close together; side by
      side; in close proximity. "I will go with thee cheek by
      jole." --Shak. " Sits cheek by jowl." --Dryden.
      [1913 Webster]

WordNet (r) 3.0 (2006):

jowl
    n 1: the jaw in vertebrates that is hinged to open the mouth
         [syn: lower jaw, mandible, mandibula, mandibular
         bone, submaxilla, lower jawbone, jawbone, jowl]
    2: a fullness and looseness of the flesh of the lower cheek and
       jaw (characteristic of aging)

Moby Thesaurus II by Grady Ward, 1.0:

45 Moby Thesaurus words for "jowl":
   bank, bazoo, beam, border, broadside, chaps, cheek, chop, chops,
   coast, embouchure, flank, gab, gob, hand, handedness, haunch, hip,
   jaw, jaws, jowls, kisser, laterality, lips, mandibles,
   many-sidedness, maw, maxilla, mouth, mug, multilaterality, mush,
   muzzle, oral cavity, planking, premaxilla, profile, quarter, shore,
   side, siding, temple, trap, unilaterality, yap