From WordNet (r) 3.0 (2006):
billet
n 1: a short personal letter; "drop me a line when you get
there" [syn: note, short letter, line, billet]
2: lodging for military personnel (especially in a private home)
3: a job in an organization; "he occupied a post in the
treasury" [syn: position, post, berth, office,
spot, billet, place, situation]
v 1: provide housing for (military personnel) [syn: quarter,
billet, canton]