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The Collaborative International Dictionary of English v.0.48 (gcide)

Eight \Eight\ ([=a]t), n.
1. The number greater by a unit than seven; eight units or
objects.
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2. A symbol representing eight units, as 8 or viii.
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Eight \Eight\ ([=a]t), n. [See {Ait}.]
An island in a river; an ait. [Obs.] "Osiers on their
eights." --Evelyn.
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Eight \Eight\ ([=a]t), a. [AS. eahta; akin to OS. ahto, OFries.
achta, D. & G. acht, OHG. ahto, Icel. [=a]tta, Sw. [*a]tta,
Dan. otte, Goth. ahtau, Lith. aszt[*u]ni, Ir. & Gael. ochd,
W. wyth, Armor. eich, eiz, L. octo, Gr. 'oktw`, Skr.
ash[.t]an. [root]306. Cf. {Octave}.]
Seven and one; as, eight years.
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