
brettern
to barrel along
Colloquial for driving or running very fast, often in a reckless way.
Er ist mit seinem Motorrad über die Landstraße gebrettert.
He barreled along the country road on his motorcycle.
to barrel along / to board
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to barrel along
Colloquial for driving or running very fast, often in a reckless way.
Er ist mit seinem Motorrad über die Landstraße gebrettert.
He barreled along the country road on his motorcycle.

to board
To cover or board something up with wooden planks. This meaning is very rare today.
Die alte Hütte wurde komplett neu gebrettert, um sie winterfest zu machen.
The old hut was completely re-boarded to make it winterproof.
The verb 'brettern' is derived from the noun 'das Brett' (board/plank). The rare, literal meaning is to cover something with boards. The common, colloquial meaning of driving fast alludes to the hard, loud sound, as if one were driving over wooden boards.
Der alte Schuppen wurde mit neuen Brettern gebrettert.
The old shed was boarded with new planks.
You can easily recognize the meaning from context. If it is about vehicles, speed, or sports, it always means 'to drive/go fast'. Only in the rare context of construction work or wooden cladding does it have the literal meaning 'to board up with planks'.
Der Skifahrer ist die schwarze Piste hinuntergebrettert.
The skier barreled down the black slope.
In the meaning 'to drive fast', 'brettern' (to barrel along) is a very colloquial word. Use it in informal conversations, but avoid it in formal or written contexts.
Was bretterst du so durch die 30er-Zone?
Why are you barreling through the 30 km/h zone like that?
The verb is often used in connection with vehicles or sports. Typical combinations are 'mit dem Auto brettern' (to barrel along by car), 'über die Autobahn brettern' (to barrel along the highway), or 'die Piste hinunterbrettern' (to barrel down the slope).
Am Wochenende brettern viele Motorradfahrer durch die Berge.
On weekends, many motorcyclists barrel through the mountains.
When a route or path is mentioned, 'brettern' (to barrel along) often appears with prepositions that describe movement through or over something, followed by the accusative. Common ones are 'durch' (through), 'über' (over/along), or 'entlang' (along).
Der LKW ist mit 100 km/h über die Landstraße gebrettert.
The truck barreled along the country road at 100 km/h.
lawn
Der Rasen is a noun referring to an area covered with short grass. Brettern is a colloquial verb meaning to drive or race very fast, often recklessly. Der Rasen is used for the grassy area; brettern is used for the fast movement.

Das Auto brettert viel zu schnell über den Weg neben der Straße.
The car barrels along far too fast on the road beside the street.
Das schnelle Auto beschädigt den Rasen neben der Straße.
The speeding car damages the lawn beside the road.