Strong's #3509: nephos (pronounced nef'-os)

apparently a primary word; a cloud:--cloud.

Thayer's Greek Lexicon:

́

nephos

1) a cloud, a large dense multitude, a throng

1a) used to denote a great shapeless collection of vapour obscuring the heavens as opposed to a particular and definite masses of vapour with some form or shape

1b) a cloud in the sky

Part of Speech: noun neuter

Relation: apparently a root word

Citing in TDNT: 4:902, 628

Usage:

This word is used 1 times:

 

Hebrews 12:1: "are compassed about with so great a cloud of witnesses, let us lay aside every weight,"