fingerpost
nounUK /ˈfɪŋ.ɡə(ɹ)ˌpəʊst/
Etymology From finger + post.
1
A board that shows the direction (and often distance) to a named place; especially one of several attached to a milepost.
2
The milepost itself.
- ...some hint, which, besides confirming him in the theory of virtue, may, likewise, serve for a finger-post to virtuous action.1857, Herman Melville, The Confidence Man, Dix, Edwards & Co, published 1857, page 108: