einkorn
noun
ein·korn ˈīn-ˌkȯrn 
: an ancient wheat (Triticum monococcum) having one-grained spikelets and grown especially formerly in poor soils in central and southern Europe and southwest Asia
also : the grain of einkorn
Note: The grain of einkorn is also called farro.
Example Sentences
Recent Examples on the Web People who have been diagnosed with celiac disease have to completely avoid gluten, found in wheat, rye and barley, as well as variations of wheat including spelt, emmer (farro), einkorn and Kamut. 
Carrie Dennett, Washington Post, 4 Nov. 2019 In about a week, Blackley had developed enough starter to begin making bread using barley, einkorn, and another old-school grain called kamut. Hiawatha Bray, BostonGlobe.com, 8 Aug. 2019 Whole grain: Choose from quinoa, emmer farro, einkorn, spelt, whole-grain sorghum (as opposed to pearled), whole-grain barley (again, not pearled), bulgur wheat, freekeh, Kamut wheat, brown rice, black rice, red rice and wild rice. Carrie Dennett, The Seattle Times, 28 Nov. 2018 To have that followed kind of in rapid succession by these other millers, like Meuer Farm doing emmer, spelt and einkorn. Kristine M. Kierzek, Milwaukee Journal Sentinel, 2 Feb. 2018 In another Stockholm collaboration, Robertson visited the storied Valhalla bakery to show them how to use heirloom grains like einkorn and emmer. Leah Mennies, Bon Appetit, 6 Apr. 2017 In another Stockholm collaboration, Robertson visited the storied Valhalla bakery to show them how to use heirloom grains like einkorn and emmer. Leah Mennies, Bon Appetit, 6 Apr. 2017 Bacon drippings flavor pearly grains of einkorn cooked risotto-like with ramps and morels. Providence Cicero, The Seattle Times, 22 June 2017 See More
Carrie Dennett, Washington Post, 4 Nov. 2019 In about a week, Blackley had developed enough starter to begin making bread using barley, einkorn, and another old-school grain called kamut. Hiawatha Bray, BostonGlobe.com, 8 Aug. 2019 Whole grain: Choose from quinoa, emmer farro, einkorn, spelt, whole-grain sorghum (as opposed to pearled), whole-grain barley (again, not pearled), bulgur wheat, freekeh, Kamut wheat, brown rice, black rice, red rice and wild rice. Carrie Dennett, The Seattle Times, 28 Nov. 2018 To have that followed kind of in rapid succession by these other millers, like Meuer Farm doing emmer, spelt and einkorn. Kristine M. Kierzek, Milwaukee Journal Sentinel, 2 Feb. 2018 In another Stockholm collaboration, Robertson visited the storied Valhalla bakery to show them how to use heirloom grains like einkorn and emmer. Leah Mennies, Bon Appetit, 6 Apr. 2017 In another Stockholm collaboration, Robertson visited the storied Valhalla bakery to show them how to use heirloom grains like einkorn and emmer. Leah Mennies, Bon Appetit, 6 Apr. 2017 Bacon drippings flavor pearly grains of einkorn cooked risotto-like with ramps and morels. Providence Cicero, The Seattle Times, 22 June 2017 See More Word History
Etymology
German, from Old High German, from ein one + korn grain — more at one, corn
First Known Use
1846, in the meaning defined above