Glossary of Terms Used in Heraldry
- Searchable online index of heraldic terms by Henry Gough and James Parker.
- http://www.ancestry.co.uk/search/db.aspx?dbid=6324

Medieval Terms
- Glossary and guide to medieval terms maintained by J. S. Arkenberg at California State University in Fullerton.
- http://the-orb.net/medieval_terms.html

Feudalism
- Dictionary of feudal terms used in England and other places.
- http://eserver.org/langs/feudal-dictionary.txt

Castle Terminology
- Cross-referenced list of terms associated with medieval castles.
- http://www.castlewales.com/casterms.html

Knighthood, Chivalry and Tournaments
- Comprehensive collection of cross-referenced terms relating to knighthood, chilvalry and tournaments with links to related sites.
- http://www.chronique.com/Library/Glossaries/glossary-KCT/glssindx.htm

Medieval Footwear Terminology
- Indexed glossary of terms relating to medieval footwear.
- http://www.personal.utulsa.edu/~marc-carlson/shoe/RESEARCH/GLOSSARY/bdef.htm