1. open fire - Noun
2. open fire - Verb
start firing a weapon
Source: WordNetWhat? Men dodging this way for single bullets? What will you do when they open fire along the whole line? I am ashamed of you. They couldn't hit an elephant at this distance. John Sedgwick
The successful pilots succeeded because they did not open fire until they were close to the target. Douglas Bader
I'd sooner sleep by an open fire and wake up fried. Brandon Boyd
The British minister, making his own inquiries, was told that if British troops landed before a German invasion or without a formal Belgian request, the Belgians would open fire. Barbara Tuchman
Chestnuts roasting on an open fire. Traditional Proverb
According to Ağca, the plan was for him and the back-up gunman Oral Çelik to open fire in St. Peter's Square and escape to the Bulgarian embassy under the cover of the panic generated by a small explosion. Source: Internet