4931  mishmereth  mish-mer'-
reth

 fem. of 4929; watch, i.e.  
the act (custody), or 
(concr.) the sentry, the 
post;  obj. preservation, or 
(concr.) safe; fig. 
observance, i.e. (abstr.)  
duty or (obj.) a usage or 
party:--charge, keep, or to 
be kept,  office, ordinace, 
safeguard, ward, watch.

 see HEBREW for 04929