Deprive of oxygen and prevent from breathing. Synonyms:smother, suffocate."The child suffocated herself with a plastic bag that the parents had left on the floor"
2.
Impair the respiration of or obstruct the air passage of. Synonyms:choke, stifle, suffocate.
3.
Be asphyxiated; die from lack of oxygen. Synonyms:stifle, suffocate.
... already worked that out. But what about the breath you exhale? It contains carbon dioxide, and if you let it stay right there in front of your face you'd be sucking it back into your lungs. After a while, it would asphyxiate you. So the air has to be kept in motion, and besides that the ventilating system has to remove ... — The Flying Saucers are Real • Donald Keyhoe
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