Buckle down
Meaning: to settle down to something; to begin to work seriously at something, to start working hard
Example: I must buckle down to some work this afternoon. If you don't buckle down to your job, you'll be fired. You had better buckle down and get busy.
Example: I must buckle down to some work this afternoon. If you don't buckle down to your job, you'll be fired. You had better buckle down and get busy.
