Proto-MSA

*naḫrīr- - nose (Kogan 2015: 540)

Proto-MSA *naḫrīr- ‘nose’ goes back to PS *naḫīr- ‘nostriľ (v. SED I No. 198)

PS
*naḫīr- - nostril (SED I No. 198; Kogan 2011: 221)

The reconstructed vocalic pattern is based on Akk., Hbr., Arm. and rather supported by MSA *naḫrīr--; cf., however, -­u-­ in Arb. nuḫ(a)rat­- and Jud. nḫwr. 

Mehri
nəḫrīr - nose (ML 308)
Jibbali
naḫrér - nose (JL 199)
Harsusi
nḫerīr - nose (HL 99)