'foot-controlled' originates from the combination of 'foot' and 'controlled', where 'foot' refers to the lower extremity of the leg and 'controlled' means to exercise restraint or direction over something.

'Foot-controlled' evolved from the need to describe devices or mechanisms operated by the foot, combining 'foot' with 'controlled'.

Initially, it meant 'controlled by the foot', and this meaning has remained consistent in modern usage.