noun: childhood; plural noun: childhoods
the state or period of being a child.
"he spent his childhood in Lewes"
synonyms:youth, early years, early days, early life, infancy, babyhood, boyhood, girlhood, pre-teens, prepubescence, adolescence, teens, teenage years, young adulthood, immaturity;
the springtime of life, one's salad days;
minority; rarenonage, juvenility, juniority, juvenescence