1. The number three.

2. Two and one.

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

• throme,
• theret,
• thruy,
• therre,
• theey,
• ththe,
• threre,
• theye,
• thare,
• threead,
• athree,
• thure,
• threww,
• thruw,
• ther,
• thares,
• treee,
• othre,
• thhere,
• thwere

• thor,
• there,
• Thora,
• Their,
• theory,
• tree,
• thiry,
• thoreau,
• throe,
• Thayer,
• Thierry.

The adjective form of the word "three" would be "third".

The plural of the "three" can be the "threes".

The singular of the "three" can be the "three".