Malchus = "king or kingdom"
https://www.blueletterbible.org/lexicon/g3124/kjv/tr/0-1/
From the noun מלך (melek), king.
https://www.abarim-publications.com/Meaning/Malchus.html
10 Then Simon Peter having a sword drew it, and smote the high priest's servant, and cut off his right ear. The servant's name was Malchus.
John 18:10
https://biblehub.com/john/18-10.htm
And one of them smote the servant of the high priest, and cut off his right ear.
Luke 22:50
https://biblehub.com/luke/22-50.htm
https://imgflip.com/i/8wzfn4
Someone told me Malchus means lawyer but I have not found that