Jacob, my dictionary, not your grandmother's MMario, also defines the word tarrier as a lingerer or one who tarries or delays, so you are correct. However, I wouldn't be surprised if there was some double entendre going on there and I'm leaning towards tarriers as being bung removers also.

MMario, come to think of it, my husband did get this book as a present for me, from a thrift store, so ya never know.