suffocate-v; 3 Senses

Sense Number 1: An agent deprives someone or something of oxygen and prevents breathing.

The child suffocated herself with plastic.
He suffocated his wife with a pillow.
She thought about how to suffocate her husband.

VerbNet: poison-42.2,suffocate-40.7
FrameNet: Killing
PropBank: suffocate.01
WordNet 3.0 Sense Numbers: 1

Sense Number 2: An object impairs the respiration of someone or something.

NOTE: death does not necessarily result.

The dog suffocated on a bone.
The foul air suffocated the children.
Carbon monoxide suffocated the driver.
The child suffocated under the pillow.
The air in this room is suffocating me.

VerbNet: suffocate-40.7
FrameNet: Death
PropBank: suffocate.01
WordNet 3.0 Sense Numbers: 2, 5, 6, 7

Sense Number 3: (Cause to) become suppressed or stifled in development.

His job suffocated his creativity.
Marriage is suffocating him.

VerbNet: subjugate-42.3
FrameNet: NM
PropBank: NM
WordNet 3.0 Sense Numbers: 3, 4