When I lived in Scotland around 25 years ago, many bars in the Highlands advertised the size of their whiskey measures in terms of gills (and I was laughed at f

When I lived in Scotland around 25 years ago, many bars in the Highlands advertised the size of their whiskey measures in terms of gills (and I was laughed at for mispronouncing the term!). I'm not sure if it's still common. So for me, it does actually come to mind at least as readily as fish anatomy.