Probably a Persian word meaning master of wine, i.e., chief butler; the title of an officer at the Babylonian court (Dan. 1:11, 16) who had charge of the diet of the Hebrew youths.
Easton’s Bible Dictionary
Melzar
Name meaningcircumcision of a narrow place, or of a bond
Easton’s Bible Dictionary (1897), public domain. Text via Theographic Bible Metadata, CC BY-SA 4.0.