0 to fire a shot from a gun: --
They fired off several shots to frighten us.
1 to write and send an angry letter to someone: --
He fired off an angry letter to the editor.
2 to quickly write and send a message, letter, etc.: --
She fired off an angry letter to staff warning them not to "bad-mouth" colleagues.
He can fire off an email with a question and usually get an answer within a few hours.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
fire sth off