The Vietnamese word "nhậy" refers to clothing or fabric that has been damaged or eaten away, often by moths or other pests. In English, this is similar to the term "moth-eaten." It describes items that are worn out or have holes due to these pests.
While "nhậy" primarily refers to moth damage, it can also imply something that is generally old or has lost its quality. Be careful with the context in which you use it so that the meaning is clear.