Neither Nor. He did not let others eat it. Generally the phrases either.
You may well have come across sentences like these. It is used before a singular noun. It is either an adverb or a determinerpronoun.
From the Cambridge English Corpus.
The verb is singular although the plural verb can also be possible. Nor In writing and formal speech neither and nor are used for linking two words or expressions in order to make a negative statement about two people things qualities or actions. There were two dresses and not one of them fitted her. Generally the phrases either.