'beak-shaped' originates from Modern English, specifically the words 'beak' and 'shape', where 'beak' meant 'the projecting part of a bird's head' and 'shape' meant 'form or contour'.

'beak-shaped' developed through compounding of 'beak' + the adjectival pattern '-shaped' (attested from Late Middle English/Early Modern English); earlier descriptive forms like 'beaklike' existed, and the hyphenated compound 'beak-shaped' became a straightforward modern formation.

Initially, it meant 'having the form of a beak', and this basic descriptive meaning has remained essentially unchanged into modern usage.