watch someone's backidiom
variants: or have someone's back
Definition of watch someone's back
: to protect someone who is doing something that is dangerous or risky A police officer always watches his partner's back.
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
- On Contractions of Multiple Words
- A Look at Uncommon Onomatopoeia
- Is Singular 'They' a Better Choice?