Ziphims is the King James Version form of Ziphites, people who lived in Ziph, in the title of Psalm 54.
See Ziph (Place) #2.
Bible dictionary
Ziphims
Adapted by Mission Mutual (Aquifer Open Bible Dictionary) from Tyndale Open Bible Dictionary © 2023 Tyndale House Publishers. CC BY-SA 4.0. About the sources