Strong's Concordance H892

Original Word: בָּבָה
Transliteration: bâbâh
Phonetic Spelling: baw-baw'
feminine active participle of an unused root meaning to hollow out; something hollowed (as a gate), i.e. pupil of the eye; apple (of the eye).

Usages throughout the bible

Zechariah 2:8 - For thus saith the LORD of hosts; After the glory hath he sent me unto the nations which spoiled you: for he that toucheth you toucheth the apple H892 of his eye.