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]

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

AYT

    Are you there?

   (1996-03-09)