[ non est ]
/ ˈnɒn ˈɛst /
the returning of a sheriff's writ when the person to be arrested or served with it cannot be found in the sheriff's jurisdiction.
Origin of non est
1865–70; < Latin: short for non est inventus (he) was not found
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019