1. sent unwanted electronic messages repeatedly to many recipients
Usage: past tense of spam; computing
2. posted the same message repeatedly in online forums or chat rooms
Usage: past tense of spam; internet slang

Examples

• My inbox was spammed with promotional emails overnight.
• The company spammed thousands of users with advertisements.
• He got banned after he spammed the chat room with the same joke.
• The forum was spammed with duplicate posts.
• She accidentally spammed her contacts when her email account was hacked.
• The discussion thread was spammed with irrelevant comments.