1. section (i.e. of text); sentence; passage; paragraph
2. phrase
3. verse (of 5 or 7 mora in Japanese poetry; of 4, 5, or 7 characters in Chinese poetry)
4. haiku; first 17 morae of a renga, etc.
5. maxim; saying; idiom; expression
6. clause (e.g. in a database query language)