Federal Consumer Information Center: Homeowner's Glossary of Building Terms

Glossary of home construction and maintenance terms.
http://www.pueblo.gsa.gov/cic_text/housing/build-terms/terms.htm

K2Construction: Construction and Building Terms

Glossary of construction, building, renovation, and home improvement terms.
http://www.k2construction.com/building.htm

Kitchen Bath and Plumbing

Acronyms and definitions; some illustrations.
http://www.tjader.com/glossary.html

Sebastian's Technical Glossary

Building pathology and construction technology, architecture, civil, structural, forensic, mechanical, pavement and materials engineering with elements of testing and quality science.
http://www.angelfire.com/biz/BuildingPathology/BldngPathGlsry.html

John Tatter's Glossary

Landscape gardening and architecture terms.
http://panther.bsc.edu/~jtatter/glossary.html

Window Lingo

Window construction terminology.
http://www.hhwindow.com/glossary.html

McAfee Heating and Air Conditioning

Terms for residential heating and cooling.
http://www.mcair.com/learnGLOSSARY.htm