1. Twice four.

2. The number eight; the figure 8; the shape of an 8.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• eighte,
• sightt,
• maight,
• eitht,
• eitgh,
• eaght,
• emight,
• hieght,
• wmight,
• weaght,
• yaght,
• eigth,
• highty,
• fiight,
• mght,
• theight,
• ewight,
• wieght,
• caight,
• eaigt

• fight,
• weight,
• eighty,
• might,
• eighth,
• height,
• It,
• ought,
• sight,
• eat,
• alight,
• tight,
• right,
• light,
• night.

The adjective form of the word "eight" is "eighth".

The plural form of the word "eight" is "eights"

The singular form of the word "eight" is "eighth"