This is the 4927th most frequent Dutch word.
gras
Grass.
Here, the word 'gras' is used as a noun referring to the vegetation in the garden.
Het gras in onze tuin is erg groen.
The grass in our garden is very green.
In this sentence, the verb 'grasduinde' (derived from 'gras') implies the act of skimming or looking through, metaphorically linked to grazing grass.
Ze grasduinde door de papieren op haar bureau.
She skimmed through the papers on her desk.
The word 'gras' here refers directly to the type of plant material as a source of food for the horse.