prong
UK[prɒŋ]US[prɔːŋ]
n
Each of two or more projecting pointed parts at the end of a fork or other tool.
n
Each of the separate parts of an attack, argument, or policy.
Etymology
The word 'prong' first appears in Middle English, but its ultimate origin is obscure. It is likely related to Middle Low German 'prange', meaning a stake or pole, suggesting a common Germanic root for a pointed object. The core semantic concept has consistently been that of a pointed projecting part, a meaning which has remained remarkably stable. Over time, this concrete meaning was extended metaphorically to describe distinct branches or divisions of an abstract plan, argument, or military maneuver.
Analysis
The word 'prong' is a simplex word of uncertain origin, likely from a Germanic source. It functions as a complete lexical unit.
Examples
One of the prongs on the garden fork bent when I hit a rock.
The new strategy is based on a three-pronged approach to economic recovery.
He carefully cleaned the food from between the prongs of his fork.