Measure word for long, thin, or narrow items such as rivers, roads, snakes, fish, or trousers; also used for certain abstract things like items of news, suggestions, or lives.

An item, article, or clause in a list, law, or treaty; a specific point or entry.

(bound form) order; system; logic

a long, narrow piece of something, such as a slip of paper or a gold bar

(literary) unobstructed; thorough; clear