Answer: tot

AnswerCrossword Clue
TOTCalculate, with "up"
TOTKiddy
TOTIntended "Sesame Street" viewer
TOTTricycle rider
TOTDay-care attendee
TOTSmall child
TOTKid
TOTRug rat, so to speak
TOTTrike rider
TOTLittle shaver
TOTSum
TOTPreschooler
TOTCrib sheet user
TOTShaver
TOTCrib denizen
TOTMobile watcher
TOTOne is "cradled" in answers to asterisked clues
TOTHead Start beneficiary
TOTToy boat pusher
TOTChocolate lover, often
totsmall child
TOTWee one
TOTLittle one
TOTWee lad
TOTYoung 'un
TOTKindergartener
TOTPalindromic peewee
TOTRug rat
TOTSmall fry
TOTYoungster
TOTKindergartner
TOTRugrat
TOT"Bubble Guppies" watcher
TOTOne learning to lie, perhaps
TOTOne learning new words daily
TOTOne who's one
TOTTyke
TOTDo addition
TOTTeletubbies fan
TOTAnkle biter