A more thorough explanation:

Definition: A spigurnel was an officer of the Chancery in early times. This position was equivalent to the Sealer of the king's writs in later times.

Example: In medieval England, a spigurnel was responsible for sealing important documents and writs issued by the king. This ensured that the documents were authentic and could be trusted.

Explanation: The example illustrates how a spigurnel was an important officer in medieval England. They were responsible for ensuring the authenticity of important documents, which was crucial in a time when forgery was common. The spigurnel's role was later taken over by the Sealer of the king's writs, who performed a similar function.