pin down
US /pɪn daʊn/
UK /pɪn daʊn/

1.
menentukan, memastikan
to understand or describe something exactly
:
•
It's hard to pin down the exact cause of the problem.
Sukar untuk menentukan punca sebenar masalah itu.
•
I can't quite pin down what's bothering me.
Saya tidak dapat menentukan apa yang mengganggu saya.
2.
menahan, memaksa tinggal
to make someone stay in a particular place or prevent them from moving
:
•
The police managed to pin down the suspect in the alley.
Polis berjaya menahan suspek di lorong itu.
•
The heavy rain pinned us down in the cabin for hours.
Hujan lebat menahan kami di dalam kabin selama berjam-jam.