Lewis Short
nixŭrĭo, īre
* V. a. desid. [nixus, from nitor], to wish to lean or rest upon: nixurit qui niti vult et in conatu saepius aliquā re perpellitur,Nigid. 144, 20.
* Transf., for parturio, to wish to bring forth: nixurio, φιλοτοκέω, Gloss. Philox.
Charlton T. Lewis, Charles Short, A Latin Dictionary