名詞 spam:

1. a canned meat made largely from pork
2. unwanted e-mail (usually of a commercial nature sent out in bulk)
   同義詞：junk e-mail

動詞 spam:

1. send unwanted or junk e-mail

spam

n.（名詞）
Unsolicited e-mail, often of a commercial nature, sent indiscriminately to multiple mailing lists, individuals, or newsgroups; junk e-mail.
垃圾電子郵件：主動發(fā)出的電子郵件，通常為商業(yè)性質，不加選擇地將信件寄送至多個電子郵件清單、個人或是新聞群組；垃圾電子郵件
v.tr.（及物動詞）
spammed,spam.ming,spams
To send unsolicited e-mail to.
向…主動寄送電子郵件
To send (a message) indiscriminately to multiple mailing lists, individuals, or newsgroups.
向…發(fā)送垃圾電子郵件：不加選擇地將信件寄送至多個電子郵件清單、個人或是新聞群組

來源：
From Spam [probably inspired by a comedy routine on the British television series] Monty Python`s Flying Circus , in which the word is repeated incessantly
From Spam [probably inspired by a comedy routine on the British television series] Monty Python`s Flying Circus , in which the word is repeated incessantly