Meaning

noun an officer of the court who is employed to execute writs and processes and make arrests etc.

originFrom Middle English baillif, baylyf, from Anglo-Norman and Old French bailif (plural bailis), probably from Vulgar Latin *bāiulivus (“castellan”), from Latin bāiulus (“porter; steward”), whence also bail. As a translation of foreign titles, semantic loan from French bailli, Scots bailie, Dutch baljuw, etc. Mostly replaced the role of native reeve. Doublet of bailo.

Etymology from Wiktionary, CC BY-SA 3.0