What is another word for "ambo"?

Roget's Thesaurus (1911) lists these synonyms for "ambo": abecedary, academic, academy, acquaintance, advocate, all, ally, alma, alter, amigo, amphitheater, and, art, associate, auditorium, auxiliary, bedfellow, best, boarding, book, boon, bosom, box, casual, cathedra, chair, chamber, childhood, chum, class, classman, classmate, colleague, college, collegiate, companion, compatriot, compeer, comrade, confidante.