n A computer malfunction that is caused by faulty software, and makes the system either partially or totally inoperable.
n A sudden large decline of business or the prices of stocks (especially one that causes additional failures)
v (transitive|management) To accelerate a project or a task or its schedule by devoting more resources to it.
v (intransitive) To experience a period of depression and/or lethargy after a period of euphoria, as after the euphoric effect of a psychotropic drug has dissipated.