Strong's Definition
or mtsolah {mets-o-law'}; also mtsuwlah {mets-oo-law'}; or mtsulah {mets-oo-law'}; from the same as 6683; a deep place (of water or mud)
KJV Usage: bottom, deep, depth
STEPBible — Tyndale Abridged Hebrew Lexicon
מְצוֹלָה (me.tso.lah) — depth. depth, the deep, the deep sea
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
[מְצוֹלָה], מְצוּלָה n.f. depth, deep base