Wordnet 3.0
NOUN (2)
1. 
 a wrestling hold with arms locked tightly around the opponent; 
2. 
 a takeover bid so attractive that the directors of the target company must approve it or risk shareholder protest; 
WordNet (r) 3.0 (2006):
bear hug
    n 1: a wrestling hold with arms locked tightly around the
         opponent
    2: a takeover bid so attractive that the directors of the target
       company must approve it or risk shareholder protest
Moby Thesaurus II by Grady Ward, 1.0:
27 Moby Thesaurus words for "bear hug":
   bite, clamp, clasp, clench, clinch, cling, clinging, clutch,
   death grip, embrace, enfoldment, firm hold, foothold, footing,
   grapple, grasp, grip, gripe, hold, hug, iron grip, nip, purchase,
   seizure, squeeze, tight grip, toehold