duck-billed

The compound adjective "duck-billed" is a transparent descriptive formation in English, directly combining two native elements. The first element, "duck," originates from Old English duce, meaning "a diver," referring to the bird's characteristic behavior. The second element, "billed," derives from the noun "bill," an old term for a bird's beak, with the adjectival suffix "-ed" indicating possession of a specific feature. The term's logic is purely morphological and visual, creating a precise zoological descriptor for any animal, most famously the platypus, whose snout bears a striking resemblance to the broad, flat beak of a duck. It exemplifies English's capacity for creating clear, compound modifiers from its Germanic lexical stock.

Structure: duck (bird) + billed (having a specified kind of bill) - duck: From Old English duce (a diver, duck), of Germanic origin. Functions as a noun used attributively to specify the type of bill. - billed: From the noun bill (beak of a bird), of unknown origin, combined with the suffix -ed, forming an adjective meaning 'having a bill'.