Geoff:

pseudopod/pseudopodium = a stretch, but good to include among these footnotes as a prime examaple of a foot-not.
Does pronate mean to the stretch the foot? Need to check that today...Nope, I just checked it and pronate means to turn the arm or hand downwards.

Savate was the word I was thinking of for boxing, not only with the hands, but also with the feet.

Also: having itchy feet = wanderlust?