Definition of "vault"

the long-drawn aisle and fretted vault

1750 June 12 (date written; published 1751), T[homas] Gray, “Elegy Written in a Country Churchyard”, in Designs by Mr. R[ichard] Bentley, for Six Poems by Mr. T. Gray, London: […] R[obert] Dodsley, […], published 1753

His fiery eies are fixt vpon the earth.As if he now deuiſ’d some Stratageme:Or meant to pierce Auernus darkſome vauts.To pull the triple headed dog from hell.

c. 1587–1588, [Christopher Marlowe], Tamburlaine the Great. […] The First Part […], 2nd edition, part 1, London: […] [R. Robinson for] Richard Iones, […], published 1592; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire, London: Scolar Press, 1973, (please specify the page)

Had I your tongues and eyes, Il’d vſe them so,That Heauens vault ſhould crack: ſhe’s gone for euer.

c. 1603–1606, William Shakespeare, “The Tragedie of King Lear”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act V, scene iii], page 308

The ſilent vaults of Death, vnknowne to Light;And Hell it ſelfe, lye naked to his ſight.

1636, George Sandys, “A Paraphrase upon Job”, in A Paraphrase upon the Divine Poems‎

No bird flew in the blue vault of heaven, no man or beast moved upon the vast countryside which lay before us.

1913, Arthur Conan Doyle, “(please specify the page)”, in The Poison Belt […], London; New York, N.Y.: Hodder and Stoughton

God said, ‘Let there be a vault through the middle of the waters to divide the waters in two.’

1985, Bible (NJB), Genesis, 1:6

to banish rats that haunt our vault

1730, Jonathan Swift, A Panegyrick on the Dean

The shady arch that vaulted the broad green alley.

1814 July 7, [Walter Scott], Waverley; […], volumes (please specify |volume=I to III), Edinburgh: […] James Ballantyne and Co. for Archibald Constable and Co.; London: Longman, Hurst, Rees, Orme, and Brown

In future updates, most likely in season six, more items will get vaulted.

2018 August 31, Steven Asarch, “'Fortnite' Developer Update 5.40: Storm Destruction, Revolver in Vault”, in Newsweek‎, New York, N.Y.: Newsweek Publishing LLC, archived from the original on 2018-10-03

While vaulting some old content may turn off a few players, Bungie seems intent on bringing as many players under its tent as possible first.

2020 June 9, Gene Park, “Bungie is finally coming through with its old promise of a 10-year ’Destiny’ plan”, in The Washington Post‎, Washington, D.C.: The Washington Post Company, archived from the original on 2020-07-09

Blizzard will vault the gorgeous Hanamura and other Assault maps from Overwatch's competitive mode when 'Overwatch 2' arrives.

2021 February 19, Kris Holt, “Overwatch 2 Will Ditch The Widely Disliked Assault/2CP Maps”, in Forbes‎, New York, N.Y.: Forbes Media, archived from the original on 2023-02-02

While some mistakes have resulted in Riot pulling Agents in the past, those changes were always temporary. If Riot is set on having only seven maps in the "Valorant," that likely means Split isn't coming back and more maps will get vaulted in the future.

2022 June 17, James Carr, “The Real Reason Valorant Is Dropping Its Oldest Map”, in SVG.com‎, archived from the original on 2022-11-28