Billy or Nanny is a term used to refer to a person who takes care of children, either as a nanny or a babysitter. The crossword solutions for this term are GOAT (4 letters), KID (3 letters), IDOL (4 letters), and AMAH (4 letters). GOAT is an acronym for 'Greatest Of All Time', which is often used to describe someone who is exceptionally talented or successful. KID is a slang term for a child. IDOL is a noun that refers to someone who is admired and respected. Finally, AMAH is a Chinese term for a nanny or housekeeper.