The term 'Herb Crusher' is a job description that requires the use of a pestle, which is a tool with a heavy rounded end used for grinding and crushing. The term 'Herb Crusher' refers to someone who uses a pestle to grind and crush herbs into a powder or paste. This is often done in order to extract the essential oils and other beneficial compounds from the herbs. The process of herb crushing can be used to make herbal teas, tinctures, salves, and other medicinal preparations.