This is the 7682nd most frequent Dutch word.
dakkoffer
A "dakkoffer" is a roof box for a car.
Here, "dakkoffer" is used as a subject noun to refer to a practical storage solution mounted on a car roof.
De dakkoffer biedt meer ruimte voor bagage tijdens lange reizen.
The roof box offers more space for luggage during long trips.
In this sentence, "dakkoffer" is an object noun and specifies the item that was purchased.
Ik heb een dakkoffer gekocht om al mijn kampeerspullen in mee te nemen.
I bought a roof box to carry all my camping gear.
Here, "dakkoffer" is part of a noun phrase and illustrates usage within a descriptive action about securing it properly.