The tear-down of the old building will begin next week.

The tear-downs of the old buildings revealed hidden architectural gems.

The heavy traffic bogs down the city's transportation system.

The heavy rain is bogging down the traffic.

He dribbled downcourt to score a layup.

I had to pull him down a peg after he started bragging about his accomplishments.

He needs to be taken down a peg for his arrogant behavior.

He always knuckles down and gets his work done.

I knuckled down and finished my project ahead of schedule.

I am knuckling down to finish my project before the deadline.