Definition of Crash

For a system or program, to fail to function correctly, resulting in the suspension of operation.

The failure of either a program or a disk drive. A program crash results in the loss of all unsaved data and can leave the operating system unstable enough to require restarting the computer. A disk drive crash, sometimes called a disk crash, leaves the drive inoperable and can cause loss of data.

to go to sleep; or to show up without invitation “Can I crash here tonight?"