Strong's H5640 · Hebrew

catham

saw-tham'

or satham (Numbers 24:15) {saw-tham'}; a primitive root; to stop up; by implication, to repair; figuratively, to keep secret

Scholarly Lexicons

Brown-Driver-Briggs (BDB)

 H5640a סָתַם stop up , shut up , keep close H5640b שָׂתַם usu. stop up , in sense of shut out , shut ears against  

Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain