ὀπήopḗ

an opening, a hole: James 3:11 (cf.

Greek (New Testament) · G3692

Meanings

Exodus 33:22), Hebrews 11:33 (cf. Obadiah 1:3).

Same root

ὀπτάνομαιoptánomai · G3700to gaze (i.e. with wide-open eyes, as at something remarkable; and thus differing from G991 (βλέπω), which denotes simply voluntary observation; and from G1492 (εἴδω), which expresses merely mechanical, passive or casual vision; while G2300 (θεάομαι), and still more emphatically its intensive G2334 (θεωρέω), signifies an earnest but more continued inspection; and G4648 (σκοπέω) a watching from a distance)

Where it appears

Appears 2 times in the Bible.

Hebrews 11:38 They were too good for this world, wandering over deserts and mountains, hiding in caves and holes in the ground.
James 3:11 Does a spring of water bubble out with both fresh water and bitter water?

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.