mate (subs.) Copy link Outline I. ComradeII. Male or female of paired animalsIII. In chess • mate (subs.): I. Comrade: sŏcius, etc.: v. companion. II. Male or female of paired animals: conjux, ŭgis, c.: Plin. 10, 59, 79 § 161. III. In chess: v. check-mate.