Circinus, circini, pen. cor Pli. An instrumÊt called a compasse.Cícino, circinas, pen. cor. circiuâre. Plin. To make a circle with a compasse.Circinâta rotunditas. Plin. Circinâtus orbis. Plin. Circinare.Ouid.To compasse: to turne rounde.
Lewis and Short: Latin dictionary
circĭno, āvi, ātum, 1, v. a. [circinus], to make round, to round (perh. not anteAug.): arbores, quae in orbem ramos circinant, Plin. 17, 12, 17, 88; 16, 38, 73, 185: circinatum tympanum, id. 18, 34, 77, 332: folia circinatae rotunditatis, id. 16, 23, 35, 86—Poet.: (Cyllenius) inclinat cursus, et easdem circinat auras, flies through in a circular course, Ov. M. 2, 721: utque suos arcus per nubila circinat Iris,
circĭnus, i, m.. = ki/rkinos, a pair of compasses' flumen Dubis. ut circino circumductum, paene totum oppidum cingit, Caes. B. G. 1, 38: diducere, Vitr. 9, 7, 2: circino spatia dimetiri, id ib.; id. 10, 4, 1: ratio circini, Plin. 2, 15, 13, 63.