/tsawl"ferdd uyn'/ ; Eng. /tsawl"feuh ruyn'/ , n.
1. (in the 19th century) a union of German states for the maintenance of a uniform tariff on imports from other countries, and of free trading among themselves.
2. any similar union or arrangement between a number of states; customs union.
[ 1835-45; Zoll custom, duty, tariff + Verein union ]