I have always called forms with lids "boxes" because that is what they called them when I joined the local woodturners club 5 years ago. But I was just asked by a non-turner why, (for about the 5th time over the past few years), and was again reminded that the term does not really fit. The dictionary says that boxes are usually a rectangular shape. It seems to me that any of the following are more accurate terms: jar, canister, container. I am curious how the term "box" became standard in wood turning.