Tsp/ˈtiːspuːn/ Definition 1 of 1Pro Tip 1/3Cooking Specific Used primarily in recipes or when discussing cooking measurements. The recipe calls for 1 tsp of vanilla extract. Pro Tip 2/3Precision Indicates a precise quantity, important for replicating recipes accurately. Ensure you use exactly 1 tsp of baking powder for the cake to rise. Pro Tip 3/3Small Quantities Refers to a small amount, less than a tablespoon. Add just a tsp of cinnamon for a subtle flavor.