bail·i·wick 
(bālə-wĭk′)
(bālə-wĭk′)n.
1. A person's specific area of interest, skill, or authority. See Synonyms at field.
2. The office or district of a bailiff.
[Middle English bailliwik : baillif, bailiff; see BAILIFF + wik, town (from Old English wīc, from Latin vīcus; see VICINITY).]