I. pin ‧ point 1 /ˈpɪnpɔɪnt/ BrE AmE verb [transitive]
1 . to discover or explain exactly the real facts about something or the cause of a problem:
It’s difficult to pinpoint the cause of the accident.
pinpoint what/how/why etc
They need to pinpoint exactly what skills are necessary.
2 . to find or show the exact position of something:
Rescue teams have now pinpointed the location of the ship.
II. pinpoint 2 BrE AmE noun [countable]
1 . a very small area or ↑ dot of something
pinpoint of
tiny pinpoints of light
2 . with pinpoint accuracy very exactly:
The missiles can hit targets with pinpoint accuracy.