For a system or program, to fail to function correctly, resulting in the suspension of operation.
— Computer ScienceWhen a computer program or operating system stops working completely or almost completely it (or the computer) is said to have ‘crashed’. When a computer crashes it usually needs to berebooted- before it can be used again. See also- lockup.
— Computer Scienceto go to sleep; or to show up without invitation “Can I crash here tonight?"
— American Slang