Dictionary definition · secure
verb
- get by special effort"He procured extra cigarettes even though they were rationed"
- cause to be firmly attached"fasten the lock onto the door"
- assure payment of
- make certain of"This nest egg will ensure a nice retirement for us"
- fill or close tightly with or as if with a plug"plug the hole"
- furnish with battens"batten ships"
adjective
- free from fear or doubt; easy in mind"he was secure that nothing will be held against him"
- free from danger or risk"secure from harm"
- not likely to fail or give way"the lock was secure"
- immune to attack; incapable of being tampered with"an impregnable fortress"
- financially safe"a good investment"
Source: Open English WordNet (CC BY 4.0).