Phrase (noun)

1. A group of words that form a grammatical unit and convey a specific meaning.
2. A short group of words that express a single idea or thought.
3. A unit of meaning in language.

Origin:

From middle english phrase, from old french phrase, from latin phrasis, from greek φράσις (phrásis).

Examples:

1. He used a phrase from Shakespeare in his speech.
2. The phrase "once upon a time" is often used to start a story.
3. The phrase "weather permitting" is often used in plans.