Fallback

A failure of one of the rocket's first-stage engines just after liftoff would result in a destructive pad fallback.

The black hole formed as a result of fallback of ejecta onto the neutron star initially created by the supernova explosion.

As a fallback, I suppose we can use typewriters if the word processing system fails.

Particle size distributions of fallback and ejecta were determined principally by mechanical sieving and weighing.

a fallback plan