“safe” is a noun and adjective with 7 meanings. Its most common meaning is: strongbox where valuables can be safely kept.
safe
noun
strongbox where valuables can be safely kept
a ventilated or refrigerated cupboard for securing provisions from pests
contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse
adjective
free from danger or the risk of harm
“a safe trip”
“you will be safe here”
(of an undertaking) secure from risk
having reached a base without being put out
“the runner was called safe when the baseman dropped the ball”
financially safe
“a good investment”
“a secure investment”
Source: WordNet 3.1, Princeton University
