/ spæm; NAmE / noun [ U ]
1.
Spam ™ finely chopped cooked meat that has been pressed together in a container, usually sold in cans and served cold in slices
2.
( informal ) advertising material sent by email to people who have not asked for it
—compare junk mail
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WORD ORIGIN
1930s: apparently from sp(iced h)am . The Internet sense appears to derive from a sketch by the British “Monty Python” comedy group, set in a cafe in which every item on the menu includes spam.