"sweet cake," c.1200, from Old French simenel "fine wheat flour; flat bread cake, Lenten cake," probably by dissimilation from Vulgar Latin *siminellus (also source of Old High German semala "the finest wheat flour," German Semmel "a roll"), a diminutive of Latin simila "fine flour" (see semolina).
Examples from the Web for simnel
With disparaging magnanimity in victory, Henry took Simnel into his kitchens as a turnspit.The Best of Brit Lit
February 2, 2011
Halliwell says, a Simnel is generally made in a three-cornered form.The Lay of Havelok the Dane
Mid-Lent, or Mothering Sunday, has its peculiar fare in simnel cakes.Curious Church Customs
There was some division of opinion between the partisans of Simnel as to whether England should be immediately invaded.Ireland under the Tudors, Volume I (of II)
They usually took as a present for their mother a small cake known as a simnel.
In Gloucestershire simnel cakes are still common; and at Usk, Monmouth, the custom of mothering is still scrupulously observed.