#4439 πύλη pule {poo'-lay}

 apparently a primary word; TDNT - 6:921,974; n f

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

 1) a gate
    1a) of the larger sort
        1a1) in the wall of either a city
        1a2) a palace
        1a3) a town
        1a4) the temple
        1a5) a prison
 2) the gates of hell (likened to a vast prison)
 3) metaph. the access or entrance into any state

—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 - gate 10; 10

—Exhaustive Concordance (KJV Translation Frequency & Location)