What is the meaning of Shelling?

present participle and gerund of shell

An artillery bombardment.

The removal of the shell from a nut, pea etc.

Grain from which the husk has been removed.

An ordering of the facets of a boundary complex such that the intersection of each facet (other than the first) with the union of all preceding facets is homeomorphic to a ball or sphere. See Shelling (topology)

Shallow, irregular cracks that appear on the surface of a coating such as plaster or mortar.

Source: wiktionary.org