put away is a verb meaning "place in a place where something cannot be removed or someone cannot escape". It carries 7 recorded senses.
lock up or confine, in or as in a jail
“The suspects were imprisoned without trial”
“the murderer was incarcerated for the rest of his life”
law
stop using
“the children were told to put away their toys”
“the students put away their notebooks”
kill gently, as with an injection
“the cat was very ill and we had to put it to sleep”
Definitions, synonyms and semantic relations for put away come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.