The word "craving" has several meanings, but the most common one refers to a strong desire or urge for something, often accompanied by feelings of longing or yearning. This can be for something tangible, such as food or a substance like drugs, or for something intangible, such as attention or affection. Craving can also refer to a strong desire for something that is difficult or impossible to attain, leading to feelings of frustration or despair.