The meaning of this last word is much disputed, and amongst those suggested are that Mark was
literally an interpreter who translated
Peter's Aramaic into Greek, that Mark was
Peter's «dragoman» (cf. Acts 13:5), and that Mark «interpreted»
Peter's
teaching by handing it on and explaining it (Papias speaks of himself as handing on what he had learnt from the elders «with my interpretations»).
For the past 30 years, he has gotten a lot of enjoyment and satisfaction out of having the opportunity to help
teach literally thousands of people about dog training and responsible
pet ownership.