to spend a period of time in prison.

He was serving time for a series of burglaries in the neighborhood.

• keep it down
• keep mouth shut
• keep move with the times
• keep nose clean
• keep nose out of
• keep nose out of something
• keep nose to the grindstone
• keep on a short leash
• keep on a tight leash
• keep one eye on
• keep one eye on someone
• keep one eye on something
• keep one step ahead
• keep on the edge of seat
• keep on the edge of their seat
• keep on the edge of your seat
• keep on their toes
• keep on toes
• keep options open
• keep own counsel
• keep pace
• keep pace with
• keep pace with someone
• keep pace with something
• Keep pecker up!