Revelation of Jesus Christ
From the KJV 1611 with Strong's Concordance
H6763
צֵלָע
tsela'
{tsay-law'}
From H6760; a rib (as curved), literally (of the body) or figuratively (of a door, that is, leaf); hence a side, literally (of a person) or figuratively (of an object or the sky, that is, quarter); architectually a timber (especially floor or ceiling) or plank (single or collectively, that is, a flooring).