'allerion' originates from Old French, specifically the word 'alérion', where 'alérion' referred to a young eagle or a heraldic eagle without beak or feet.

'alérion' transformed into the English word 'allerion' and retained its heraldic significance.

Initially, it meant 'a young eagle', but over time it evolved into its current meaning of 'a heraldic eagle displayed without beak or feet'.