talón
/taˈlon/ · B2 · noun · m
heel
👣 talón = stalk-on: you stalk on your heels, and cheques have a tear-off stub
Talón is the heel, the back part of the foot or shoe. A cheque is also a talón because it is torn from a stub, the 'heel' of the cheque book. Think: heel = the back end that stays behind.