מִבְצָר (mibṣār) is
a Hebrew noun
meaning fortification. It appears
37 times
in 16 books of the Hebrew Bible
(Strong's H4013).
Same Hebrew root (TWOT 270g)
Root family 270: בַּסַרbasar — to gather, restrain, cut off, fence, fortify. (ASV similar. RSV translates “fortified” where ASV and KJV read “fenced, walled,” etc.)