1. In the intermediate space of; from one to another; belonging to two or more; having mutual relation to two or more; noting difference or discrimination of one from another.

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

• betwin,
• betwix,
• betwixed,
• vetwixt,
• netwixt,
• hetwixt,
• getwixt,
• bwtwixt,
• bstwixt,
• bdtwixt,
• brtwixt,
• b4twixt,
• b3twixt,
• berwixt,
• befwixt,
• begwixt,
• beetwixt,
• Bedqwilt,
• betwex,
• betwixte

• bewitched.

The adjective form of the word "betwixt" is "betwixtly".