enter

verb17

1. •
   to go inside a space that has walls on all or some of its sides

   • You should knock before you enter, unless you want to see me naked.
2. •
   To go into or upon, as lands, and take actual possession of them.
3. •
   To type (something) into a computer; to input.

   • Enter your user name and password.
4. •
   To record (something) in an account, ledger, etc.

   • Each amount entered in the debit column of the journal is posted by entering it on the credit side/column of an account in the ledger. — 2003
5. •
   To make report of (a vessel or its cargo) at the custom house; to submit a statement of (imported goods), with the original invoices, to the proper customs officer for estimating the duties. See entry.
6. •
   (US, old-fashioned) To file, or register with the land office, the required particulars concerning (a quantity of public land) in order to entitle a person to a right of preemption.

   • Under existing laws governing the qualifications of an alien to enter 160 acres or more of the public domain he is only required to file his declaration of intent to become a citizen. — 1887
7. •
   (figurative) To go or come into (a state or profession).

   • My twelve-year-old son will be entering his teens next year.
   • She had planned to enter the legal profession.
8. •
   (formal) To begin (a regular activity or job); to undertake; to take up.

   • […] I entered, that same day, on a regular occupation of pushing Miss Havisham in this chair […] round her own room, and across the landing, and round the other room. — 1860
9. •
   To become a party to an agreement, treaty, etc.

   • I am pleased to notify the Congress of my intent to enter into a Free Trade Agreement (FTA) with the Government of Singapore. — 2003
10. •
    To become effective; to come into effect.

    • This Act shall enter into force on 01 March 1998. — 2005
11. •
    To come on to the stage during a performance.
12. •
    Used as a stage direction, usually preceding the name of the character who appears.
13. •
    (figurative) Used in the manner of a stage direction: to enter the picture, to become relevant.
14. •
    To cause to go (into), or to be received (into); to put in; to insert; to cause to be admitted.

    • to enter a boy at college, a horse for a race, etc.
15. •
    To place in regular form before the court, usually in writing; to put upon record in proper from and order.
16. •
    To deposit for copyright the title or description of (a book, picture, map, etc.).
17. •
    (no longer used) To initiate; to introduce favourably.

    • This sword but shown to Caesar, with this tidings, / Shall enter me with him. — 1606

noun3

1. •
   The "Enter" key on a computer keyboard.
2. •
   A stroke of the Enter key.
3. •
   The action of entering; an instance of entering.

noun1

1. •
   Abbreviation of enterprise.