A combine (the machine used to harvest and thresh wheat) has a shoe -- it is the part where the sieves separate the grain from the chaff.

The shoe is the device from which cards are dealt in card games such as Chemin De Fer. [I learned this by reading James Bond novels as a youngster.]

The shoe on my wife's several cameras is that part by which certain accessories (e.g. a remote flash unit) are attached.

The part of an electric train which contacts an electrified track and draws power therefrom is the train's shoe.

The big solid foundation to which the superstructure of a bridge is attached is its shoe.

There are probably others.