I.a pressure (the same as nisus, v. 2, nisus).
I. Lit.: astra se nixu suo conglobata continent, revolution, course, * Cic. N. D. 2, 46, 117. —
II. Transf., a striving, exertion, effort: “hic ad summum non pervenit nixu (al. nisu), sed impetu,” Quint. 8, 4, 9; 1, 12, 10. —
B. In partic., pains, throes, travail of parturition: “fetūs nixibus edunt,” Verg. G. 4, 199; Ov. H. 4, 126: “laboriosi nixūs,” Gell. 12, 1, 4.—
III. Nixus, a constellation; v. Engonasi.