put to sleep
idiomPart ofsleep
put to sleep — idiom
1. to give an animal a drug or injection that causes its death without pain, usuall
1.idiom
Definition
to give an animal a drug or injection that causes its death without pain, usually because it is very ill or suffering.
Example
The vet had to put their old dog to sleep because it was in too much pain.
After the cat was diagnosed with a serious illness, the family made the difficult choice to put her to sleep.