(idiomatic) to fasten a button in the wrong buttonhole

(transitive, figuratively) to remember as a red letter day, to mark as a milestone, to see as a landmark event

(figuratively) at a short distance, a stone's throw away, nearby

to kill two birds with one stone

(figuratively) to be stonehearted, to be heartless, to have no heart

(figuratively) to rob Peter to pay Paul

(figuratively) to make a contribution, to contribute one's fair share, to play one's part, to do one's bit

An unorganized territory in Antoine-Labelle, Laurentides, Quebec, Canada.

a rolling stone gathers no moss

plural of pierre d'achoppement