Strong’s Greek
G3031 — libanotos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
λιβανωτός
libanotos — pronounced lib-an-o-tos'
from 3030; frankincense, i.e. (by extension) a censer for burning it:--censer. see GREEK for 3030
2 occurrences in the KJV.
Revelation 8:3
And another angel came and stood at the altar, having a golden censer; and there was given unto him much incense, that he should offer it with the prayers of all saints upon the golden altar which was before the throne.
Revelation 8:5
And the angel took the censer, and filled it with fire of the altar, and cast it into the earth: and there were voices, and thunderings, and lightnings, and an earthquake.