J & Jay

Eventually, Homophones, Weakly should be a little desktop reference dictionary, right? (Or at least a dictionary-like app.) As such, I think it would be nice to have at least one entry for each letter of the alphabet. So I took a look through what we've done so far, and was surprised to find that I hadn't done anything starting with J yet.
So here you go.
Now if I can just come up with something for X and Z...