Frost free sillcock
Will drain fine on the level, as others said.
Being a cold weather Yankee, I'm sure you already know that it cannot drain properly with anything left connected to it. I mention that as an amusing point. Being in the deep Gulf Coast region, we get very few freezes that are threats for pipes, but when we do, there is always a call for a plumber's number from a HO who reports that their frost proof faucet has frozen and split. And they all have the same thing in common when we look at it before calling our plumber... there is the neatly coiled hose still attached to it.