Big/bɪɡ/ Definition 1 of 5Pro Tip 1/3Physical Size Use 'big' for tangible things you can measure, like buildings or animals. Look at that big elephant! Pro Tip 2/3Quantity Emphasis 'Big' stresses a large quantity, more than average or expected. She had a big collection of stamps. Pro Tip 3/3Not Always Positive 'Big' might imply excessiveness and not always something positive. He's in big trouble now.