For ships, it is the vertical distance from the waterline to the deepest part of the vessel. This is usually the keel.
For sports, it is a way of teams choosing who they are going to throw a pile of money at.
For beer, it is drawn from a keg rather than a bottle or can.
WWG1WGA
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
Nicely done. I kind of knew, sort of. Thanks for these posts.
Then, of course, if you leave the window open, you may feel a draft.