The term 'wee child' is a term used to describe a small child. It can be broken down into three crossword solutions: TAD (3 letters), TYKE (4 letters), and BAIRN (5 letters). TAD is a Scottish word for a young child, while TYKE is an informal term for a young child, usually used in the United States. BAIRN is a Scottish word for a baby or young child. All three words are used to refer to a small child, and all three are derived from Old English and Old Norse words.