* No place like home: This idiom means that there is no place better or more comfortable than one's own home. It is used in the movie when Dorothy says, "There's no place like home."
* A heart of gold: This idiom means that someone is very kind and compassionate. It is used in the movie when the Tin Man says, "I wish I could give you a heart of gold."
* The straw that broke the camel's back: This idiom means that the last in a series of unpleasant things is too much to bear. It is used in the movie when the Scarecrow says, "That was the straw that broke the camel's back."
* The Wizard behind the curtain: This idiom means that someone or something is not as powerful or impressive as they seem. It is used in the movie when the Wizard is revealed to be a small man behind a curtain.
* Follow the yellow brick road: This idiom means to follow a clear and easy path to success. It is used in the movie when the characters are told to follow the yellow brick road to the Emerald City.
* Over the rainbow: This idiom means to be in a state of happiness or joy. It is used in the movie when Dorothy sings the song "Over the Rainbow."