εὔπνους

French (Bailly abrégé)

ους, ουν :
att. c. εὔπνοος.

Russian (Dvoretsky)

εὔπνους: стяж. = εὔπνοος.

Middle Liddell

πνέω
I. breathing well, breathing a sweet smell, sweet-smelling, Mosch., Anth.
II. affording a free passage to the air, Lat. perflabilis, Xen.