The Hebrew word eshnab refers to a latticed window or window-frame — a structure of interwoven bars through which one could see while being partially concealed. It appears in the account of Sisera's mother anxiously watching through a lattice for her son's return from battle.
Windows and lattices in Scripture often frame moments of watching, waiting, and longing. Sisera's mother watches through the eshnab for a victory that will never come — a poignant picture of hope placed in human military strength. Solomon's beloved speaks of a beloved who looks through the lattice (Song 2:9), suggesting intimacy and desire. Theologically, the image of watching and being watched speaks to God's own gaze — He sees through every barrier, His eyes 'running to and fro throughout the earth' (2 Chronicles 16:9).