Verb
To bring to a state of asphyxia; to suffocate. [Used commonly in the past pple.]
Source: Webster's dictionaryThe child suffocated under the pillow Source: Internet
The foul air was slowly suffocating the children Source: Internet
Othello smothered Desdemona with a pillow Source: Internet
The child suffocated herself with a plastic bag that the parents had left on the floor Source: Internet
In very high densities ( algal blooms ) these algae may discolor the water and outcompete, poison, or asphyxiate other life forms. Source: Internet
These species are obligate ram ventilators and would presumably asphyxiate if unable to move. Source: Internet