blackthorn

acorn, adorn, airborne, althorn, baseborn, bass horn, bicorne, blue corn, boxthorn, broomcorn, buckthorn, bullhorn, careworn, Christ's-thorn, Dearborn, dehorn, dent corn, earthborn, einkorn, field corn, firethorn, firstborn, flint corn, foghorn, forewarn, forlorn, forworn, freeborn, French horn, green corn, greenhorn, hartshorn, hawthorn, highborn, hulled corn, inborn, inkhorn, krummhorn, leghorn, longhorn, lovelorn, lowborn, newborn, outworn, pod corn, popcorn, post horn, pronghorn, ramshorn, reborn, saxhorn, seaborne, self-born, shipborne, shoehorn, shopworn, shorthorn, skyborne, soilborne, stillborn, stinkhorn, suborn, sweet corn, tick-borne, timeworn, tinhorn, toilworn, tricorne, trueborn, twice-born, twinborn, unborn, unworn, wayworn, wellborn, well-worn, wind-borne