A period during which activity in law courts is formally suspended; a legal vacation. Hence: a period of cessation of any activity, a vacation.
Particularly common in the 17th century.
Late 16th century; earliest use found in Thomas Smith (1513–1577), scholar, diplomat, and political theorist. From classical Latin iūstitium cessation from business in the courts of justice, legal vacation from iūs law, right + -stit-, past participial stem of sistere to stand + -ium.