This tool at Smith’s Tavern is a knife with a long serrated blade with a sharp pointed end. The top of the blade does not appear to have ever been sharpened. It has a unique sword-like wooden handle. Serrated blade knives have a wavy, scalloped or saw-like blade. Serrated blades are better suited for tasks that require aggressive 'sawing' motions. The actual use of this tool is unknown.
If anyone does know more about this particular tool, please email the Historical Society with this much-needed information.