Lewis Short
nixus (noun M) : 1. nitor
* A pressure (the same as nisus, v. 2, nisus).
* Lit.: astra se nixu suo conglobata continent, revolution, course, * Cic. N. D. 2, 46, 117.
* Transf., a striving, exertion, effort: hic ad summum non pervenit nixu (al. nisu), sed impetu,Quint. 8, 4, 9; 1, 12, 10.
* In partic., pains, throes, travail of parturition: fetūs nixibus edunt,Verg. G. 4, 199; Ov. H. 4, 126: laboriosi nixūs,Gell. 12, 1, 4.
* Nixus, a constellation; v. Engonasi.
Charlton T. Lewis, Charles Short, A Latin Dictionary
Lewis Short
nixus and nīsus, a, um, Part., from 1. nitor.
Charlton T. Lewis, Charles Short, A Latin Dictionary