Strong's G2072 — ἔσοπτρον (noun)
esoptron (es'-op-tron) n.
1. a mirror (for looking into)
[from G1519 and a presumed derivative of G3700]
KJV: glass 
Root(s): G1519, G3700 
Compare: G2734 
Hebrew root: ὀπτάνομαι
Occurrences: 2