cornet

The word 'cornet' entered English in the late 14th century from the Old French 'cornet', itself a diminutive of 'corn' meaning horn. This derives from the Latin 'cornu', meaning horn or projecting point, which can be traced back to the Proto-Indo-European root ker- meaning horn or head. The literal logic is "a small horn," which perfectly describes the instrument's original form, made from an animal horn. Over time, this sense extended to other conical objects, such as the pastry container, preserving the core idea of a horn-like shape.

Structure: corn (horn) + et (diminutive suffix) - corn: From Latin 'cornu' (horn). In this word, it functions as the core root indicating the shape or material of the original object. - et: A diminutive suffix of Old French origin, indicating a small version of something.