Definition of tank verb from the Oxford Advanced Learner's Dictionary

     

    tank

     verb
    verb
    BrE BrE//tæŋk//
     
    ; NAmE NAmE//tæŋk//
     
    Verb Forms present simple I / you / we / they tank
    BrE BrE//tæŋk//
     
    ; NAmE NAmE//tæŋk//
     
    he / she / it tanks
    BrE BrE//tæŋks//
     
    ; NAmE NAmE//tæŋks//
     
    past simple tanked
    BrE BrE//tæŋkt//
     
    ; NAmE NAmE//tæŋkt//
     
    past participle tanked
    BrE BrE//tæŋkt//
     
    ; NAmE NAmE//tæŋkt//
     
    -ing form tanking
    BrE BrE//ˈtæŋkɪŋ//
     
    ; NAmE NAmE//ˈtæŋkɪŋ//
     
     
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  1. 1[intransitive] (North American English) (of a company or a product) to fail completely The company's shares tanked on Wall Street.
  2. 2[transitive, intransitive] tank (something) (North American English, sport) to lose a game, especially deliberately She was accused of tanking the match.
  3. Word Origin early 17th cent.: perhaps from Gujarati tānkũ or Marathi (a language spoken in the western Indian state of Maharashtra) tānke͂ ‘underground cistern’, from Sanskrit tadāga ‘pond’, probably influenced by Portuguese tangue ‘pond’, from Latin stagnum. The military vehicle took its name from the use of tank as a secret code word during manufacture in 1915. Phrasal Verbstank (something) up
See the Oxford Advanced American Dictionary entry: tank