Last week's term was eggshell skull, which is defined as:
A hypothetical medical condition used to illustrate the idea that if you are at fault when you injure someone, you are responsible for all the consequences, whether you could have foreseen them or not. For example, if you cause an injury to a hemophiliac who begins to bleed severely, you are responsible for whatever happens to him, even though you had no way of knowing that the injury would be so severe.
Once again, Edward Wiest got it right!
Today's term is:
As always, no dictionaries, please.