The term "newborn weight" refers to the birthweight or body mass of a baby during the first few days after being born. This is typically measured in grams or kilograms and can vary greatly depending on factors such as gestational age, size of the mother, and number of previous pregnancies. Newborn weight is an important indicator of overall health and can be used to identify potential issues that may require medical attention. It's also a crucial factor in determining growth patterns throughout infancy and early childhood.