COMPANION

n. 1 fellow, associate, comrade, colleague, confrère, Colloq chiefly Brit and Australian mate, US and Canadian buddy For ten years they had been constant companions 2 vade-mecum, manual, handbook, guide, reference book, enchiridion They publish a pocket companion listing the month's events 3 escort, chaperon(e), attendant, (in Spain, Portugal) duenna Aunt Dinah is too old to be alone, so we have engaged a companion for her