The Collaborative International Dictionary of English v.0.48:

Hug \Hug\, v. i. [imp. & p. p. Hugged; p. pr. & vb. n.
   Hugging.] [Prob. of Scand. origin; cf. Dan. sidde paa huk
   to squat, Sw. huka sig to squat, Icel. h?ka. Cf. Huckster.]
   1. To cower; to crouch; to curl up. [Obs.] --Palsgrave.
      [1913 Webster]

   2. To crowd together; to cuddle. [Obs.] --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hug \Hug\, v. t.
   1. To press closely within the arms; to clasp to the bosom;
      to embrace. "And huggen me in his arms." --Shak.
      [1913 Webster]

   2. To hold fast; to cling to; to cherish.
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            We hug deformities if they bear our names.
                                                  --Glanvill.
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   3. (Naut.) To keep close to; as, to hug the land; to hug the
      wind.
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   To hug one's self, to congratulate one's self; to chuckle.
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The Collaborative International Dictionary of English v.0.48:

Hug \Hug\, n.
   A close embrace or clasping with the arms, as in affection or
   in wrestling. --Fuller.
   [1913 Webster]

WordNet (r) 3.0 (2006):

hug
    n 1: a tight or amorous embrace; "come here and give me a big
         hug" [syn: hug, clinch, squeeze]
    v 1: squeeze (someone) tightly in your arms, usually with
         fondness; "Hug me, please"; "They embraced"; "He hugged her
         close to him" [syn: embrace, hug, bosom, squeeze]
    2: fit closely or tightly; "The dress hugged her hips"

Moby Thesaurus II by Grady Ward, 1.0:

129 Moby Thesaurus words for "hug":
   abduct, accost, accueil, address, adhere, adhere to, agglomerate,
   around, bear, bear hug, bite, bob, bosom, bow, bunch, carry off,
   cherish, clamp, clasp, cleave, cleave to, clench, clinch, cling,
   cling to, clinging, clip, clot, cluster, clutch, coagulate, cohere,
   congeal, conglomerate, curtsy, death grip, embosom, embrace,
   enfold, enfoldment, entertain, firm hold, fold, follow close upon,
   fondle, foothold, footing, foster, freeze to, glad hand, go with,
   grapple, grasp, greeting, grip, gripe, grow together, hail,
   hand-clasp, handshake, hang about, hang on, hang on to,
   hang together, harbor, have, have and hold, hearty welcome, hello,
   hold, hold fast, hold on, hold on to, hold tight, hold together,
   hover over, how-do-you-do, huddle, hug the shore, iron grip, keep,
   keep close to, keep hold of, kidnap, kiss, lie by, make welcome,
   march with, mass, never let go, nip, nod, nurse, nurture,
   open arms, persist, press, purchase, reception, salutation, salute,
   seizure, set, shanghai, smile, smile of recognition,
   smiling reception, solidify, squeeze, stand by, stay, stay inshore,
   stay near, stay put, stick, stick to, stick together, tailgate,
   take hold of, the glad hand, throttle, tight grip, toehold,
   treasure, treasure up, wave, welcome, welcome mat, welcoming