Definition of lightered:
(n) :
A device used to light things, especially a reusable handheld device for creating fire to light cigarettes.
(n) :
A person who lights things.
(n) :
A flat-bottomed boat for carrying heavy loads across short distances (especially for canals or for loading or unloading larger boats).
(v) :
To transfer (cargo or passengers) to or from a ship by means of a lighter or other small vessel.
(v) :
To transfer cargo or fuel from (a ship), lightening it to make its draft less or to make it easier to refloat.