'forearm-connected' originates from the combination of 'forearm' and 'connected', where 'forearm' refers to the part of the arm between the elbow and the wrist, and 'connected' means joined or linked.

The term 'forearm' comes from Old English 'forarm', and 'connected' from Latin 'connectere', meaning 'to bind together'.

Initially, it meant 'linked to the forearm', and this meaning has largely remained the same in modern usage.