1. To be a person, animal, or plant that has not lived or existed for very long and is not yet fully mature. English = (be) young.
2. When used as part of a comparison, this sign ("X") is preceded by the sign MORE or LESS and followed by the sign THAN, then the signs for the person or thing being compared ("Y"), e.g., MORE X THAN Y. In this construction the X sign is often given a repeated movement. English = (be) younger.