'ear-shaped' originates from the combination of 'ear' and 'shaped', where 'ear' refers to the organ of hearing and 'shaped' indicates the form or outline of something.

'ear' comes from Old English 'ēare', and 'shaped' comes from Old English 'sceapian', meaning 'to form or create'.

Initially, it meant 'having the form of an ear', and this meaning has largely remained the same in modern usage.