A board that shows the direction (and often distance) to a named place; especially one of several attached to a milepost(noun)
The milepost itself(noun)
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Use "fingerpost" in a sentence
"John sees, in that entirely insignificant thing, a kind of fingerpost pointing to far more important, deeper, and real correspondences."
"I think of the Tower of London like a tall fingerpost pointing up to God."
"The road dropped a little into Milford, and the thing shied, put down its head and bolted, and Mr. Hoopdriver only thought of the brake when the fingerpost was passed."