testimony

nonsexist; terms like testimony, protest, New Testament, and testicles all come from the Latin testari meaning to testify or to witness (the word "testes" developed as a supposed "witness" to virility). The connection between testes and testimony was reinforced by the old Roman custom whereby men swore oaths by laying a hand on their genitals while women swore by their breast. (Freud was puzzled as to how women, not fearing castration, developed a conscience.)