Definition of "Lost" :
noun: people who are destined to die soon
adjective: not caught with the senses or the mind
"Words lost in the din."
adjective: unable to function; without help
adjective: no longer in your possession or control; unable to be found or recovered
"A lost child."
adjective: spiritually or physically doomed or destroyed
adjective: not gained or won
"A lost battle."
adjective: having lost your bearings; confused as to time or place or personal identity
adjective: perplexed by many conflicting situations or statements; filled with bewilderment
"She felt lost on the first day of school."
adjective: incapable of being recovered or regained
"His lost honor."
adjective: deeply absorbed in thought
"Lost in thought."