6. Cooties As a nickname for body lice or head lice, cooties first appeared in trenches slang in 1915. It’s apparently derived from the coot, a species of waterfowl supposedly known for being infested with lice and other parasites.
7. Crump-Hole Crump is an old English dialect word for a hard hit or blow that, after 1914, came to be used for the explosion of a heavy artillery shell. A crump-hole was the crater the shell left behind.