1
general::
Carry off, steal, as in The burglars made away with all their jewelry. [Late 1600s] 2. Use up, consume, as in The boys made away with all the sandwiches. This usage was first recorded in 1843. 3. Kill, destroy, as in We decided to make away with the old horse. [c. 1500] Also see DO AWAY WITH, def. 1. 2.
American Heritage Idioms
2
general::
Phrase(s): make away with someone or something [and] make off with someone or something
to take someone or something away; to make someone or something disappear. • The robber made away with the jewelry. • The maid quickly made off with the children. We only saw them for a moment.
McGrawhill's American Idioms And Phrasal Verbs