Strong's Definition
or keceh {keh'-seh}; apparently from 3680; properly, fulness or the full moon, i.e. its festival
KJV Usage: (time) appointed
STEPBible — Tyndale Abridged Hebrew Lexicon
כֶּ֫סֶא (ke.se) — full moon. full moon
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
כֶּ֫סֶא Pr 7:20, כֶּ֫סֶה ψ 81:4 n.[m.] full moon ref