Strong's Concordance H3975

Original Word: מְאוּרָה
Transliteration: mᵉʼûwrâh
Phonetic Spelling: meh-oo-raw'
feminine passive participle of H215; something lighted, i.e. an aperture; by implication, a crevice or hole (of a serpent); den.

Usages throughout the bible

Isaiah 11:8 - And the sucking child shall play on the hole of the asp, and the weaned child shall put his hand on the cockatrice' den. H3975