Idioms
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.
Idiom:
have (something) at one's fingertips
Meaning:
to have something within reach
Example:
I did not have a pen at my fingertips so I could not write down the address.
List of common idioms, their meanings and examples of their usage in sentences
Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.