cether (Hebrew #5643)
from 5641; a cover (in a good or a bad, a literal or a figurative sense)
KJV usage: backbiting, covering, covert, X disguise(-th), hiding place, privily, protection, secret(-ly, place).
Pronounce: say'-ther
Origin: or (feminine) cithrah (Deut. 32:38), {sith-raw'}