生齿shēngchǐ〈书fml.〉长出乳齿,古时把已经长出乳齿的男女登入户籍,后来借指人口、家口{growing of milk teeth. In ancient times, babies were registered only after they had developed milk teeth. The word was later used to refer to population or membership in a family}: ~日繁。{The population is growing with each passing day.}