a post bearing a sign that gives information on directions / (cryptic crosswords) A word or phrase within a clue that serves as an indicator, rather than being fodder.

(transitive) To install signposts on. / (transitive) To direct (somebody) to services, resources, etc.

plural of signpost

simple past tense and past participle of signpost

present participle of signpost

plural of signposter

One who signposts, or directs people to some resource.