eric the red

Everyyhing masonic has a symbolic meaning - mostly derived from the craft of masonry.

Carpenters, butchers, shoemakers, blacksmiths, and many other tradesmen wore aprons. They acted as tool holders, storage for things like nails, etc, as well as having a protective purpose.

The "mason's pinnies" you refer to have a symbolic purpose (one of the 'secrets' you will be told when you are accepted as a memeber) and are a historicial remnant of what was once a practical object.

Robin