key
US /kiː/
UK /kiː/

1.
sleutel
a small piece of shaped metal with incisions cut to fit the wards of a particular lock, which is inserted into a lock and turned to open or close it.
:
•
I can't find my car keys.
Ik kan mijn autosleutels niet vinden.
•
She locked the door and put the key in her pocket.
Ze deed de deur op slot en stak de sleutel in haar zak.
2.
sleutel, cruciaal
a thing that is of crucial importance to a situation, problem, or explanation.
:
•
Communication is the key to a successful relationship.
Communicatie is de sleutel tot een succesvolle relatie.
•
The detective found the key piece of evidence.
De detective vond het cruciale bewijsstuk.