Cleanup means the process of removing dirt, mess, or unwanted things to make a space tidy and orderly again. After a birthday party, cleanup involves picking up wrapping paper, washing dishes, and vacuuming crumbs. After a science experiment, cleanup means putting away equipment, wiping down tables, and disposing of materials properly.

The word suggests dealing with a significant mess that requires real effort and multiple steps. An oil spill requires a massive cleanup operation with special equipment and trained workers. After a storm, neighborhood cleanup might involve clearing fallen branches, repairing damage, and hauling away debris.

In baseball, the cleanup hitter bats fourth in the lineup and got this name because strong hitters in that position were expected to “clean up” the bases by driving in runners who had reached first, second, or third base. A cleanup hitter typically combines power and consistency, someone the team counts on when runs matter most.

People also use cleanup to describe fixing problems or finishing incomplete work. When a project goes wrong, someone has to handle the cleanup: correcting mistakes, addressing complaints, and setting things right. The word carries a sense of responsibility, taking on the unglamorous but necessary work of restoring order after something messy has happened.