illūnis — Lewis & Short
illūnis (inl-), e, adj.in-luna,
I moonless, without moonlight (post-Aug.):
nox,Plin. Ep. 6, 20, 14; Sil. 15, 619; Amm. 17, 2, 3.—Also, illūnĭus, a, um:
noctis illunio tempore,App. M. 4, p. 150, 29; so,
tenebris illuniae caliginis impeditus,id. ib. 9, p. 232, 18.