What is the meaning of Hoarding?

A roofed wooden shield placed over the battlements of a castle and projecting from them.

A temporary fence-like structure built around building work to add security and prevent accidents to the public.

A billboard.

The practice of accumulating goods.

A good which is hoarded.

An anxiety disorder characterized by a compulsive need to accumulate goods and feelings of anxiety or discomfort about discarding such goods.

present participle and gerund of hoard

Source: wiktionary.org