Definitions for "Spent"
Exhausted; worn out; having lost energy or motive force.
Exhausted of spawn or sperm; -- said especially of fishes.
drained of energy or effectiveness; extremely tired; completely exhausted; "the day's shopping left her exhausted"; "he went to bed dog-tired"; "was fagged and sweaty"; "the trembling of his played out limbs"; "felt completely washed-out"; "only worn-out horses and cattle"; "you look worn out"
Keywords:  abler, hens, dairy, egg, cows
The agriculture industry calls egg-laying hens whose production levels have dropped off "spent." Dairy cows whose milk production has slowed are also commonly said to be "spent."
Descriptive of late adult stage, abler eggs have been deposited.
No longer laying well.
Bulbs and flowers of a plant that have finished blooming. It's time to deadhead them.
In shooting, a cartridge or component thereof that has been fired.
Keywords:  money
having all been spent; "the money is all gone"