Definition of suffocate verb from the Oxford Advanced American Dictionary

     

    suffocate

     verb
    verb
    NAmE//ˈsʌfəˌkeɪt//
     
    Verb Forms present simple I / you / we / they suffocate
     
    he / she / it suffocates
     
    past simple suffocated
     
    -ing form suffocating
     
     
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  1. 1 [intransitive, transitive] to die because there is no air to breathe; to kill someone by not letting them breathe air Many dogs have suffocated in hot cars. suffocate somebody/something The couple were suffocated by fumes from a faulty gas heater. He put the pillow over her face and suffocated her. (figurative) She felt suffocated by all the rules and regulations.
  2. 2[intransitive] be suffocating if it is suffocating, it is very hot and there is little fresh air Can I open a window? It's suffocating in here!
suffocation
 
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NAmE//ˌsʌfəˈkeɪʃn//
 
noun [uncountable] to die of suffocation
See the Oxford Advanced Learner's Dictionary entry: suffocate