A word I learned early from these stories was "sesame". "Open, sesame!" the magic words that opened the door to the treasure. I still remember that phrase every time I eat a roll with sesame seeds.
In anatomy, there are very small bones that form where tendons cross joints, as in the fingers, to keep joint in alignment when flexed. They are called sesamoids, because they are so small. The kneecaps are large ones.