flame
noun [ C ]
COMMUNICATIONS, INTERNET uk/fleɪm/ usan angry or offensive message that is sent by email or left on a message board, etc.
flame
verb [ I or T ]
COMMUNICATIONS, INTERNET uk/fleɪm/ usto send an angry or offensive message to someone using email, or by leaving it on a message board, etc.:
When participating in these forums, you should never flame other participants.