if you have a bottle of scotch which was distilled in 1944 and bottled in 1956, you have a bottle of 12 year old scotch
a [scotch] [whisky] that has been aged in the barrel at least 12 years
"if you have a bottle of scotch which was distilled in 1944 and bottled in 1956, you have a bottle of 12 year old scotch" What is the definition of "12 year old"?