Teaspoon/ˈtiːspuːn/ Definition 1 of 2Pro Tip 1/3Stirring Tool A 'teaspoon' is commonly used in homes to mix ingredients in a cup. Use a teaspoon to stir your tea after adding lemon. Pro Tip 2/3Not for Serving 'Teaspoon' isn't meant for serving dishes; it's too small. Please use a serving spoon, not a teaspoon, for the rice. Pro Tip 3/3Household Standard In many homes, 'teaspoon' refers to any small spoon, not just for measuring. Can you pass me a teaspoon for my yogurt?