1843, from German Zollverein, literally "customs union," from Zoll "toll" (see toll (n.)) + Verein "union," from vereinen "to unite," from ver- + ein "one" (from PIE root *oi-no- "one, unique").
zodiacal
Zoe
zoetrope
Zohar
zoic
zollverein
zombie
zonal
zone
zoned
zoning
