Eighty a. : Eight times ten; fourscore.

Eighty n. : The sum of eight times ten; eighty units or objects.

Eighty n. : A symbol representing eighty units, or ten eight times repeated, as 80 or lxxx.

Example:
How big a gas tank does a 1994 Oldsmobile Eighty-Eight Royale have?

Taxonomy
free encyclopedia, duration, Saros series, series 80, Integers, solar eclipses, truck stop, model number, number 80, languages, divisors, astronomy, magnitude, Saros number, search, eightieth, LXXX, free dictionary.

Defination from the web:
Eighty Days by Jules Verne. in the title of the film "Star 80" (1983) starring Mariel Hemingway ... Eighty shilling ale. According to Exodus 7:7, Moses was 80 years old when he initially spoke to Pharaoh on behalf of his people. ...