Real Dictionary

stab
singular noun: If you have a stab at something, you try to do it.
singular noun: You can refer to a sudden, usually unpleasant feeling as a stab of that feeling.
verb: If someone stabs you, they push a knife or sharp object into your body.
verb: If you stab something or stab at it, you push at it with your finger or with something pointed that you are holding.

stab in American English
a wound made by piercing with a knife, dagger, or other pointed weapon
to make a thrust or piercing wound with or as with a knife
to pierce or wound with or as with a knife, etc.
intransitive verb: to thrust with or as if with a knife or other pointed weapon
transitive verb: to pierce or wound with or as if with a pointed weapon

stab in British English
verb: to pierce or injure with a sharp pointed instrument

stab. in American English
abbreviation: stabilization