Source : Webster's Revised Unabridged Dictionary (1913)

Bailiwick \Bail"i*wick\, n. [Bailie, bailiff + wick a village.]
   (Law)
   The precincts within which a bailiff has jurisdiction; the
   limits of a bailiff's authority.

Source : WordNet®

bailiwick
     n 1: the area over which a bailiff has jurisdiction
     2: a branch of knowledge; "in what discipline is his
        doctorate?"; "teachers should be well trained in their
        subject"; "anthropology is the study of human beings"
        [syn: {discipline}, {subject}, {subject area}, {subject
        field}, {field}, {field of study}, {study}, {branch of
        knowledge}]