[Stratoscope]

It's an interesting question, but it doesn't have an easy answer. Words and phrases in English mean whatever you and I and everyone else agree on. And we won't always agree: words and phrases can mean different things to different people.

One person may define crossing Antarctica as a straight line, coast to coast, that intercepts the South Pole.

Another may say the South Pole isn't significant with regard to the continent of Antarctica. It's the South Pole of the Earth, but it's not that close to the geographical center of the continent. If you're really going to cross the continent, you ought to go through that geographical center.

Someone else may ask what is a coast? Do you include the great ice shelves? Do you have to start from the outermost edge of any ice shelf or can you start at the edge of the (smaller) landmass instead?

Another person, perhaps Colin, may say "Talk about this all you want, but here is where I am going. It's close to the route that previous Antarctic explorers have taken. I'm the one putting my life on the line, and I say I'm crossing Antarctica. But feel free to disagree with me."