Idioms
An idiom is a group of words, or in other words, a phrase that has a meaning other than its literal meaning of the words in it.
Idiom:
touch off (someone) or touch (someone) off
Meaning:
to make someone very angry
Example:
I touched off my friend when I said something that she did not like.
List of common idioms, their meanings and examples of their usage in sentences
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.