Noah Webster's Dictionary (n.) That which is swelled beyond the surrounding surface; a swelling or tumor on the body; a prominence; a bunch or knob; an elevation.

Multi-Version Concordance Protuberance (1 Occurrence) 1 Kings 7:20 and the chapiters on the two pillars also above, over-against the protuberance that 'is' beside the net; and the pomegranates 'are' two hundred, in rows round about on the second chapiter. (YLT)