Definitions

1. verb

to serve (something) in; to insert (a part) into (something)

“The mechanic in-served the new engine into the old car.”

2. verb

to serve (a sentence or a term) in; to insert (a period of time) in (a sentence or a term)

“The judge in-served a six-month sentence in the defendant’s total sentence.”

3. noun

the act of serving (something) in; the act of inserting (a part) into (something)

“The in-service of the engine took several hours.”