detect with the senses; "The fleeing convicts were picked out of the darkness by the watchful prison guards"; "I can't make out the faces in this photograph"
show approval or appreciation of; "My work is not recognized by anybody!"; "The best student was recognized by the Dean"
exhibit recognition for (an antigen or a substrate)
line thrown from a vessel that people can cling to in order to save themselves from drowning
line that raises or lowers a deep-sea diver
support that enables people to survive or to continue doing something (often by providing an essential connection); "the airlift provided a lifeline for Berlin"; "she offered me a lifeline in my time of grief"
accept (someone) to be what is claimed or accept his power and authority; "The Crown Prince was acknowledged as the true heir to the throne"; "We do not recognize your gods"
accept as legally binding and valid; "acknowledge the deed"
express obligation, thanks, or gratitude for; "We must acknowledge the kindness she showed towards us"
report the receipt of; "The program committee acknowledged the submission of the authors of the paper"
measures taken as a precaution against theft or espionage or sabotage etc.; "military security has been stepped up since the recent uprising"
a guarantee that an obligation will be met
freedom from anxiety or fear; "the watch dog gave her a feeling of security"
a department responsible for the security of the institution's property and workers; "the head of security was a former policeman"
defense against financial failure; financial independence; "his pension gave him security in his old age"; "insurance provided protection against loss of wages due to illness"
property that your creditor can claim in case you default on your obligation; "bankers are reluctant to lend without good security"
a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends; "he held several valuable securities"
the state of being free from danger or injury; "we support the armed services in the name of national security"