Strong's #822: 'eshnab (pronounced esh-nawb')

apparently from an unused root (probably meaning to leave interstices); A latticed window:--casement, lattice.

Brown-Driver-Briggs Hebrew Lexicon:

ׁ

'eshnâb

1) window-lattice

Part of Speech: noun masculine

Relation: apparently from an unused root (probably meaning to leave interstices)

Usage:

This word is used 2 times:

 

Judges 5:28: "a window, and cried through the lattice, Why is his chariot so long"
Proverbs 7:6: "of my house I looked through my casement,"