English
quadrivalve
From quadri- + valve.
Today it means
noun A door, shutter, etc. with four folds.
Sources
Sources: Wiktionary, “quadrivalve”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / quadrivalve