rocking-chair

The term 'rocking-chair' is a transparent compound from the 18th century, perfectly describing its function through its components. The first element, 'rocking', originates from the Old English verb roccian, meaning to move or sway, which itself has possible Proto-Germanic roots related to disturbance or backward movement. The second element, 'chair', has a classical journey from the Greek kathedra (a seat or bench), through Latin cathedra, into Old French, and finally into English. The compound's logic is entirely literal: it is a 'chair that rocks,' a domestic innovation that combined the common concept of a seated piece of furniture with a soothing, rhythmic motion, evolving no abstract meaning beyond its direct descriptive purpose.

Structure: rocking (to move back and forth) + chair (a seat) - rocking: Derived from the verb 'rock', of Germanic origin (Old English roccian), meaning 'to move to and fro'. In this compound, it functions as a participial adjective describing the chair's action. - chair: From Old French chaiere, from Latin cathedra 'seat', from Greek kathedra (from kata- 'down' + hedra 'seat'). It functions as the head noun, the object being described.