All 5 Uses

immigrate
in
The Devil in the White City
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Nearby, at the distribution warehouse of the Chicago Inter Ocean, a widely read and respected newspaper, a young Irish immigrant—and staunch supporter of Carter Harrison—completed his workday.†
p. 58.2

immigrant = a person who came to live in a new country
Somewhere in the heart of the city a young Irish immigrant sank still more deeply into madness, the preamble to an act that would shock the nation and destroy what Burnham dreamed would be the single greatest moment of his life.†
p. 109.5
The first real work in Jackson Park began on February 11, when fifty Italian immigrants employed by McArthur Brothers, a Chicago company, began digging a drainage ditch.†
p. 119.3 *

immigrants = people who came to live in a new country
ON NOVEMBER 28, 1892, Patrick Eugene Joseph Prendergast, the mad Irish immigrant and Harrison supporter, selected one of his postal cards.†
p. 183.1

immigrant = a person who came to live in a new country
Patrick Prendergast, the young mad Irish immigrant, took pride in Harrison's renewed popularity and believed his own efforts at promoting the ex-mayor for reelection had had a lot do with the campaign's new momentum.†
p. 214.7

Definitions:

(1) (immigrate)
come to live in a new country
(2) (meaning too rare to warrant focus)
Much more rarely, immigrate can mean that anything (such as an animal or plant) migrates into a new environment.