leap to (one's) defense(redirected from leap to their defences)
leap to (one's) defense
To begin defending one very quickly or abruptly. I appreciate the thought, but I don't need you leaping to my defense every time someone starts arguing with me. Thankfully, a group of people in the bar leaped to her defense when the man started assaulting her. The boss singled out Jonathan when he started criticizing the progress of the project, so I leaped to his defense.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.