Longman Dictionary of Contemporary English homepage

safeguard

1 verb
     
safe‧guard1 [transitive]
to protect something from harm or damage
safeguard somebody's interests/rights/welfare etc
The industry has a duty to safeguard consumers.
technology that will safeguard the environment
safeguard something against something
a program for safeguarding the computer system against viruses
Definition from the Longman Dictionary of Contemporary English
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