Fellow Craft. dryfoo is one of the people who got me started in Masonry, and he's talking about that.

Masonry has three "degrees" -- theoretically ranks, but most people actually get to the third degree very quickly, so they're effectively three levels of initiatory ritual that you go through. The degrees mimic the operative Mason's guilds that the organization grew out of, so they are known as Entered Apprentice, Fellow Craft, and Master Mason. The phrases are used so commonly that they're often abbreviated EA, FC and MM.