All 3 Uses

probation
in
Drown, by Junot Diaz
(Auto-generated)

Wayne works on the boss and a week later I'm back, on probation, painting the warehouse.†
Story 7

probation = a period of testing
The two fights he had were reported to the bosses and they put him on probation.
Story 10 *

probation = a period during which someone is watched carefully to assure behavior improves
She kicked him out twice but after probationary weeks at Jo-Jo's allowed him to return.†
Story 10

probationary = in a manner that tests someone or something for a period of time

Definitions:

(1) (probation)
a period of time when a person is being tested or watched to see if they meet certain expectations or follow rules
(2) (meaning too rare to warrant focus)
In archaic literature, probation can be used to mean "proof" or "demonstration."