What is the meaning of used?

verb

• Put into service; make work or employ for a particular purpose or for its inherent or natural purpose.
  • usage: "use your head"; "we only use Spanish at home"; "I can't use this tool"; "Apply a magnetic field here"; "This thinking was applied to many projects"; "How do you utilize this tool"; "I apply this rule to get good results"; "use the plastic bags to store the food"; "He doesn't know how to use a computer"
  • synonyms: use, utilize, utilise, apply, employ
• Take or consume (regularly or habitually. )
  • usage: "She uses drugs rarely"
  • synonyms: use, habituate
• Use up, consume fully.
  • usage: "The legislature expended its time on school questions"
  • synonyms: use, expend
• Seek or achieve an end by using to one's advantage.
  • usage: "She uses her influential friends to get jobs"; "The president's wife used her good connections"
  • synonyms: use
• Avail oneself to.
  • usage: "apply a principle"; "practice a religion"; "use care when going down the stairs"; "use your common sense"; "practice non-violent resistance"
  • synonyms: practice, apply, use
• Habitually do something (use only in the past tense. )
  • usage: "She used to call her mother every week but now she calls only occasionally"; "I used to get sick when I ate in that dining hall"; "They used to vacation in the Bahamas"
  • synonyms: use

adjective

• Employed in accomplishing something. "the principle of surprise is the most used and misused of all the principles of war- H. H. Arnold & I. C. Eaker
• Of persons; taken advantage of.
  • usage: "after going out of his way to help his friend get the job he felt not appreciated but used"
  • synonyms: exploited, ill-used, put-upon, victimized, victimised
• Previously used or owned by another.
  • usage: "bought a secondhand (or used) car"
  • synonyms: secondhand