Sentence:  ln some cultures the dead are given a new proper name, known as a "necronym," to avoid breaking the taboo. <WSD>Necronyms</WSD> sound to me a great deal like the euphemisms we use, such as "passed on" or "passed away," to say that someone died ... 
Meaning of the word marked with <WSD> tags:  A substitute name used to refer to a person who has died (instead of the name the person had in life).