Definition of billets:
(n) :
A short informal letter.
(n) :
A written order to quarter soldiers.
(n) :
A sealed ticket for a draw or lottery.
(n) :
A place where a soldier is assigned to lodge.
(n) :
Temporary lodgings in a private residence, such as is organised for members of a visiting sports team.
(n) :
An allocated space or berth in a boat or ship.