1. A kind of heraldic dragon. See Wyvern.

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

• wiever,
• qivern,
• aivern,
• eivern,
• 3ivern,
• 2ivern,
• wuvern,
• wjvern,
• wkvern,
• w9vern,
• w8vern,
• wicern,
• wibern,
• wigern,
• wifern,
• wivwrn,
• wivsrn,
• wivdrn,
• wiveren,
• wiveer

• wyvern.

The plural of the "wivern" can be the "wiverns".

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