#4721 στέγη stege {steg'-ay}

 strengthened from a primary tegos (a "thatch" or "deck" of a
    building); TDNT - n/a; n f

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) a roof: of a house

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - roof 3; 3

—Exhaustive Concordance (KJV Translation Frequency & Location)