Meaning of the word "fingers crossed" in English

What does "fingers crossed" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

fingers crossed

US /ˈfɪŋɡərz krɔst/
UK /ˈfɪŋɡəz krɒst/

Idiom

used to express hope for good luck or success

Example:
I have an interview tomorrow, so fingers crossed!
We're hoping for good weather for the picnic, fingers crossed.