spam - definition and synonyms

noun [uncountable] computing 

Your browser doesn’t support HTML5 audio

/spæm/
  1. emails that are sent to large numbers of people on the Internet, especially when these are not wanted
Word story
From Spam, the trade name for a type of cooked meat that is sold in tins. Because people had to eat so much of it during the Second World War, it became the object of many jokes.