What does "old vine" mean to you? 25 years? 75 years? As I posted Tuesday, the federal government is considering defining the word "estate" on wine labels, which could force brands like Beringer Founders Estate to be renamed. The same notice in the Federal Register listed 15 other terms the TTB is thinking about. These are at an earlier stage than "estate," which could be defined as soon as January. But they're a big deal for wineries with names like Concannon Vineyard.