What is the meaning of Gabion?

A cylindrical basket or cage of wicker which was filled with earth or stones and used in fortifications and other engineering work (a precursor to the sandbag).

A woven wire mesh unit, sometimes rectangular, made from a continuous mesh panel and filled with stones sometimes coated with polyvinyl chloride.

A porous metal cylinder filled with stones and used in a variety of civil engineering contexts, especially in the construction of retaining walls, the reinforcing of steep slopes, or in the prevention of erosion in river banks.

A knickknack, objet d'art, curiosity, collectable.

gabion

gabion

Source: wiktionary.org