to be or cause to be killed by lack of breathable air <the law requires the owner of a discarded refrigerator to remove its door so that a child won't get trapped inside and suffocate>
to keep (someone) from breathing by exerting pressure on the windpipe <temporarily suffocated by the seat belt>
to experience complete or partial blockage of the windpipe <suffocating in the thick, black smoke of the burning building>
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