Meaning : Be a mystery or bewildering to.
This beats me!.
Got me--I don't know the answer!.
A vexing problem.
This question really stuck me.
Meaning : Hinder or prevent (the efforts, plans, or desires) of.
What ultimately frustrated every challenger was Ruth's amazing September surge.
Foil your opponent.
Meaning : Restrain the emission of (sound, fluid, etc.).
Meaning : A flat plate that controls or directs the flow of fluid or energy.