CHILD (3 letters) The term 'SMALL KID' can be broken down into two crossword solutions: TOT and CHILD. TOT is a three letter word that is used to refer to a young CHILD, usually one who is not yet able to walk. CHILD is also a three letter word that is used to refer to a young person, typically between the ages of birth and puberty. Together, these two words form the term 'SMALL KID', which is used to describe a very young CHILD.