Merriam-Webster Collegiate Dictionary - spelt

 I. noun  Etymology: Middle English, from Old English, from Late Latin ~a, of Germanic origin; perhaps akin to Middle High German ~e split piece of wood, Old High German spaltan to split — more at split  Date: before 12th century an ancient wheat (Triticum ~a syn. T. aestivum ~a) with spikelets containing two light red grains; also the grain of ~  II. chiefly British past and past participle of spell