1. time served - Noun
2. time served - Adjective
time served (uncountable)
(law) Time spent in remand awaiting trial, when credited after a guilty verdict usually by subtracting from the sentence.
The defendant was not innocent, but he was let go with time served.
(of a craftsman etc.) Having completed an apprenticeship or period of training, thus acquiring skills.
Having completed many years of service.
Source: en.wiktionary.orgtime-served