Amish

[ah-mish, am-ish] /ˈɑ mɪʃ, ˈæm ɪʃ/
adjective
1.
of or pertaining to any of the strict Mennonite groups, chiefly in Pennsylvania, Ohio, Indiana, and Canada, descended from the followers of Jakob Ammann, a Swiss Mennonite bishop of the 17th century.
noun
2.
the Amish people.
Origin
1835-45, Americanism; < German amisch, after Jakob Ammann; see -ish1
British Dictionary definitions for Amish

Amish

/ˈɑːmɪʃ; ˈæ-/
adjective
1.
of or relating to a US and Canadian Mennonite sect that traces its origin to Jakob Amman
noun
2.
the Amish, the Amish people
Word Origin
C19: from German Amisch, after Jakob Amman, 17th-century Swiss Mennonite bishop
Word Origin and History for Amish
adj.

1844, American English, from the name of Jacob Amman, 17c. Swiss Mennonite preacher who founded the sect. Originally spelled Omish, which reflects the pronunciation in Pennsylvania German dialect. As a noun, by 1884.

Amish in Culture
Amish [(ah-mish, am-ish, ay-mish)]

A group of Protestants who broke away from the Mennonites in the seventeenth century. The Amish live in close communities, farm for a living, and do without many modern conveniences, such as telephones, automobiles, and tractor-drawn plows.

Note: Some of the Pennsylvania Dutch are Amish.