n.1.(Paleon.) An orthoceras.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Down on the farm boys and girls from St John's C of E Primary School, Crossens, Southport, are feeding geese, hens, the straighthorned pygmy goats from Afghanistan and the shaggy black Soay sheep, with their curled horns designed for battle in the rutting season.