the world > action or operation > harm or detriment > danger > [noun] > liability to harm, loss, etc. > action or condition of exposure to harm > unprotectedness > unprotected side or point (2)
blind side1606
the unguarded, weak or assailable side of a person or thing, weakness; also, formerly, the unsightly or unpresentable side. Also, the side on…
exposure?1611
concrete. An exposed or unprotected point. Obsolete.