So earlier people were saying how the dictionary works both ways and since the word sport wasn't in the definition of Drum Corps then it couldn't be one.
Well I was bored so I did a little looking at both www.dictionary.com and www.webster.com.
I looked at football, baseball, basketball, hockey soccer. None of those five had the word sport in their definition. They all said game. Well football had the word sport on the page (dictionary.com) but it wasn't in the actual definition. Oh well.
I also looked up Drum and Bugle Corps on webster. com. It didn't have it. It suggested dermatologists....