What is another word for "pen"?

Roget's Thesaurus (1911) lists these synonyms for "pen": authorship, bad, balustrade, barbarism, barricade, barrier, bent, break, bull, case, choice, circumscribe, circumvallation, command, commit, composition, cordon, corral, defense, diction, dike, dingle, ditch, door, dress, dyke, eloquence, enceinte, envelope, espalier, express, expression, false, faulty, fence, fold, fosse, gate, gateway, girdle.