This is the 3401st most frequent Dutch word.
linker
"Linker" means "left" (as in the left side).
The word 'linker' is used as an adjective to specify the position relative to an object—in this case, indicating that it is the 'left' door out of potentially multiple doors.
De linker deur van het huis is blauw geschilderd.
The left door of the house is painted blue.
The word 'linker' specifies the wrist where the watch is worn, acting again as a descriptive adjective indicating position.
Hij draagt een horloge om zijn linker pols.
He wears a watch on his left wrist.
Here, 'linker' identifies which lane out of multiple is being referred to, demonstrating its function as a positional descriptor.