Definition of tentacle noun from the Oxford Advanced American Dictionary

     

    tentacle

     noun
    noun
    NAmE//ˈtɛntɪkl//
     
     
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  1. 1[countable] a long, thin part of the body of some creatures, such as squid, used for feeling or holding things, for moving, or for getting food (figurative) Tentacles of fear closed around her body.
  2. 2tentacles [plural] (usually disapproving) the influence that a large place, organization, or system has and that is hard to avoid The tentacles of satellite television are spreading ever wider.
See the Oxford Advanced Learner's Dictionary entry: tentacle