Eight"een` (?), a. [AS. eahtatne, eahtatne. See Eight, and Ten, and cf. Eighty.]
Eight and ten; as, eighteen pounds.
© Webster 1913.
Eight"een`, n.
1. The number greater by a unit than seventeen; eighteen units or objects.
2. A symbol denoting eighteen units, as 18 or xviii.
© Webster 1913.