Lexical Definition

‎כֶּלַח‎ kelach (keh'-lakh) vigor ^H:N-M
from an unused root meaning to be complete

full (old) age.

• maturity

1) full strength, firm or rugged strength, vigour

Brown-Driver-Briggs

I. ‎כֶּ֫לַח‎ noun masculine possibly firm or rugged strength (see √ above), ‎אֱלֵיקָֿ֑בֶר‎ ‎׳‎‎תָּבוֺא בְכ‎ Job 5:26 thou shalt come in firm strength (with thy body vigorous, powers unimpaired) unto the grave; ‎עָלֵימוֺ אָבַד‎ ‎כָּ֑לַךְ‎ Job 30:2 upon whom vigour has perished.

Brown-Driver-Briggs References