Slow running faucet !?!?

We went away for several days and shut off the main water valve. Came back, turned on the water valve and all the faucets work properly except the faucet in the main floor bathroom sink. It seems like it's barely running any water at all.
I checked for leaks: none. Checked to make sure all valves were fully opened (on the sink itself for both hot and cold water). Still a very small stream of water is coming out.
Any idea what's happening? (I was thinking some sort of pressure problem but all other faucets are fine. Maybe an 'air bubble' of sorts on just that sink?)
q slow running faucet, bathroom ideas, home maintenance repairs, plumbing
  9 answers