colleague ("sister" in the same craft, occupation, or society)
1900, Arthur Francis Leach, Report on the manuscripts of the corporation of Beverley, At the death of the co-sisters of the Guild, every co-brother of the Guild to be present
1989, Abusaleh Shariff, Fertility transition in rural South India, During this time I came to know about tubectomy from my co-sister and also from the female health worker. This time both my husband and father-in-law refused the surgery on the ground that I was the eldest daughter-in-law and a responsible person for the whole family.