Guess that bolt ....new game

Umm, I am not looking for the application for this screw, that would be too easy!! I am looking for someone to name the style of this screw, or maybe more appropriately, the correct name for the style of head on this screw!! You know, like the drywall screws are Bugle head, and the sheet metal screws are Pan Head?? Without peeking or googling, I want someone to name that screw!!... Geof