stab-v; 3 Senses

Sense Number 1: pierce with a knife or sharp object

A man stabbed to death a fellow online gamer who sold a virtual sword they had jointly won.
Several inmates were stabbed during a prison yard fight.
So I stabbed him in the head with a fork.
He promptly stabbed the steak, left the knife there, and placed a napkin over it.
I'm a vegan but I had a nightmare that I stabbed a cow with a steak knife and ate it!

VerbNet: poison-42.2,swat-18.2
FrameNet: Cause_harm
PropBank: stab.01
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: poke or thrust abruptly, without piercing

He stabbed his finger into her ribs.
He cackled with glee as each manuscript was stabbed repeatedly with a rubber stamp.

VerbNet: swat-18.2
FrameNet: NM
PropBank: NM
WordNet 3.0 Sense Numbers: 3

Sense Number 3: betray, cause intense harm (abstract)

NOTE: metaphorical use; includes idiom STAB IN THE BACK

The offices were filled with people stabbing the project in the heart from the time we signed the deal.
The university pretty much stabbed the company in the back.
They stabbed their employees in the back by reneging on many commitments they had made.
Why are you crying now when you stabbed the very idea of Gandhian policy immediately after Independence?

VerbNet: NM
FrameNet: NM
PropBank: NM