I’m fascinated by typography even though I don’t understand a thing about it. This link includes a visual of the following:

They speak the arm (of, say, an E), the crotch (of an M), which could further be described as an acute crotch or an obtuse crotch, the ear (of some g’s), which might be a flat ear or a floppy ear, the eye (of an e), the leg (of a k), the shoulder (of an n), the tail (of a j or a Q), and the spine (of an S).