settler

Etymology

From settle + -er.

noun

1. Someone who settles in a new location, especially one who takes up residence in a previously uninhabited place; a colonist.
   the first settlers of New England
   The law, which let settlers stay on private land if they had built there without knowing the property belonged to Palestinians or had done so at the state’s direction, was backed by Israel’s most right-wing governing coalition to date. June 9, 2020, David M. Halbfinger, Adam Rasgon, “Israel Court Rejects Law Legalizing Thousands of Settlement Homes”, in New York Times
2. Someone who decides or settles something, such as a dispute.
3. (colloquial) That which settles or finishes, such as a blow that decides a contest.
4. (Britain) The person in a betting shop who calculates the winnings.
5. A drink which settles the stomach, especially a bitter drink, often a nightcap.
6. A vessel, such as a tub, in which something, such as pulverized ore suspended in a liquid, is allowed to settle.
   First, there will be little reaction in the settler so that the concentrations of soluble constituents in the recycle stream are the same as those in the bioreactor. 2011, C. P. Leslie Grady, Jr., Glen T. Daigger, Nancy G. Love, Biological Wastewater Treatment, Third Edition, page 189