'sharp-beaked' originates from Modern English, formed by combining the adjective 'sharp' and the noun 'beak' with a hyphen to create a compound adjective meaning 'having a sharp beak'.

'sharp' comes from Old English 'scearp' meaning 'cutting, keen'; 'beak' entered Middle English from Old Norse 'bekkr' / Old French 'bec' (from a Germanic source), and the compound 'sharp-beaked' is a straightforward modern English formation combining these elements.

Initially, the component words described 'sharp' (keen, cutting) and 'beak' (the bird's bill); the compound has retained the literal sense of those components and continues to mean 'having a sharp beak'.