Webster's Revised Unabridged Dictionary · 1913

Eight

Eight (āt) , noun

[See Ait.]

An island in a river; an ait. [Obsolete]
Osiers on their eights. — Evelyn

Eight (āt) , adjective

[Anglo-Saxon eahta; akin to Old Saxon ahto, OFries. achta, Dutch & German acht, Old High German ahto, Icelandic ātta, Swedish åtta, Danish otte, Gothic ahtau, Lithuanian asztůni, Ir. & Gael. ochd, Welsh wyth, Armor. eich, eiz, Latin octo, Greek 'oktw`, Sanskrit ashtan. r306. Compare Octave.]

Seven and one; as, eight years.

Eight (āt) , noun

1.
The number greater by a unit than seven; eight units or objects.
2.
A symbol representing eight units, as 8 or viii.