Smoking Gun

smoking gun

According to Google, a smoking gun means “a piece of incontrovertible incriminating evidence.” I can tell what it means, but simply put, a piece of clear evidence that shows someone did commit a crime. If you think of a smoking gun, it’s pretty intuitive and easy to remember. This term seems to be used as ‘smoking gun evidence’ in the context of science as well.

diaper

The “a” sound in diaper has almost disappeared, making it sound like diper. Any similar case like this?

intra-

This prefix means “within.” Today I came across the term “intrauterine” in the context of birth control. This word is a bit confusing at first, unless you are familiar with either “intra-“ or “uterine.” (For me, unfortunately…) Anyway, I haven’t seen (or at least don’t remember) any other word with this prefix than intrauterine, so I’ll look into it more later.