Chipping is the separation of small pieces from the object (AAT 2004).
Synonyms in English
Chipping takes place when a piece of an object has come off with a rather sharp/pointed edge. These chips are often caused by cracking that connects several parts of the object's surface together to the point that there is nothing holding the chip to the object.
Chipping can take place in almost any type of object, however common ones are glass, wood, masonry, or other harder substances.
Chipping. 2004. Art and Architecture Thesaurus Online. Getty Research Institute. http://www.getty.edu/vow/AATFullDisplay?find=chipping&logic=AND¬e=&english=N&prev_page=1&subjectid=300053752 (accessed March 22, 2015).