Lexical Definition

‎νέφος‎ néphos (nef'-os) cloud G:N-N
apparently a primary word

cloud.

Usage: 5 forms in 25 verses
Form Translated As     In Verse(s)
νεφών clouds LXX.Job.20.6LXX.Job.37.21
of clouds LXX.Job.37.16
νεφέλησ cloud LXX.Job.38.1
νέφουσ cloud LXX.Job.40.6
νέφοσ a cloud LXX.Job.7.9LXX.Job.30.15LXX.Job.38.34LXX.Prov.16.15Heb.12.1
cloud LXX.Job.26.8LXX.Job.37.11
cloud for its LXX.Job.38.9
his cloud LXX.Job.26.9
νέφη and clouds LXX.Prov.3.20
clouds LXX.Job.35.5LXX.Job.36.28LXX.Job.37.22LXX.Job.38.37LXX.Ps.104.3LXX.Prov.8.28LXX.Prov.25.14LXX.Prov.25.23LXX.Eccl.11.3LXX.Eccl.12.2

Abbott-Smith

νέφος, -ους, τό, [in LXX for עָב, שַׁחַק, עָנָן;]
a mass of clouds, a cloud (cf. νεφέλη); metaph. (as in Hom., Hdt., al.), of a dense throng: He 12:1.†

Abbott-Smith References

Book Refs
Hebrews 12:1

Liddell-Scott-Jones

νέφος, εος, τό,

cloud, mass of clouds, [Refs 8th c.BC+]

__2 metaphorically [Refs 8th c.BC+]; σκότου ν., of blindness, [Refs 5th c.BC+]; ν. οἰμωγῆς, στεναγμῶν, [Refs 5th c.BC+]; ὀφρύων ν. a cloud upon the brow, [Refs 4th c.BC+]
__II metaphorically, also, a cloud of men, etc., ν. πεζῶν, Τρώων, [Refs 8th c.BC+]; ψαρῶν, κολοιῶν,[Refs 5th c.BC+]; πενεστάων ν.[NT]; πολέμοιο ν. the cloud of battle, thick of the fight, [Refs 8th c.BC+]. (Cf. Sanskrit nábhas 'fog', 'cloud', Slavonic nebo 'heaven', Latin nebula.)

LSJ Scripture Refs: Heb.12.1