What is the meaning of enter?

verb

• To come or go into.
  • usage: "the boat entered an area of shallow marshes"
  • synonyms: come in, get into, get in, go into, go in, move into
• Become a participant; be involved in.
  • usage: "enter a race"; "enter an agreement"; "enter a drug treatment program"; "enter negotiations"
  • synonyms: participate
• Register formally as a participant or member.
  • usage: "The party recruited many new members"
  • synonyms: enroll, inscribe, enrol, recruit
• Be or play a part of or in.
  • usage: "Elections figure prominently in every government program"; "How do the elections figure in the current pattern of internal politics"
  • synonyms: figure
• Make a record of; set down in permanent form.
  • synonyms: record, put down
• Come on stage.
• Take on duties or office.
  • usage: "accede to the throne"
  • synonyms: accede
• Put or introduce into something.
  • usage: "insert a picture into the text"
  • synonyms: insert, infix, introduce
• Set out on (an enterprise or subject of study. )
  • usage: "she embarked upon a new career"
  • synonyms: embark