Spud/spʌd/ Definition 1 of 4Pro Tip 1/2Colloquial Use Spud is a casual term for potato, often used in informal speech or writing. Let's make some fries from these spuds. Pro Tip 2/2Common Misunderstanding Some might confuse 'spud' for a technical term because of its non-food-related meanings. Remember, in this context, spud means potato, not a tool.