The Collaborative International Dictionary of English v.0.48:

Ait \Ait\, n. [AS. ?, ?, perh. dim. of [imac]eg, [imac]g,
   island. See Eyot.]
   An islet, or little isle, in a river or lake; an eyot.
   [1913 Webster]

         The ait where the osiers grew.           --R. Hodges
                                                  (1649).
   [1913 Webster]

         Among green aits and meadows.            --Dickens.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ait \Ait\, n.
   Oat. [Scot.] --Burns.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Eyot \Ey"ot\ ([imac]"[o^]t or [=a]t), n. [Ey (AS. [imac]g or
   Icel. ey) + F. dim. termination -ot; cf. AS. [imac]geo[eth].
   See Island, and cf. Ait.]
   A little island in a river or lake. See Ait. [Written also
   ait, ayt, ey, eyet, and eyght.] --Blackstone.
   [1913 Webster]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

AIT
       Advanced Intelligent Tape (Sony, Streamer)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

AIT
       Angewandte InformationsTechnik [verlags gmbh] (manufacturer)


The Free On-line Dictionary of Computing (30 December 2018):

Advanced Intelligent Tape
AIT

    (AIT) A form of magnetic tape and drive using
   AME developed by Sony for storing large amounts of data.
   An AIT can store over 50 gigabytes and transfer data at six
   megabytes/second (in February 1999).  AIT features high speed
   file access, long head and media life, the ALDC compression
   algorithm, and a MIC chip.

   (http://aittape.com/).

   Seagate

(http://seagate.com/support/tape/scsiide/sidewinder/ait_main_page.shtml).

   (1999-04-16)