🔼The name Shalmai in the Bible
There's only one man named Shalmai in the Bible. Both Ezra and Nehemiah mention him as the head of a family of Nethinim (temple servants) of which an untold number of members returned from the Babylonian exile (Ezra 2:46, Nehemiah 7:48).
🔼Etymology of the name Shalmai
It's not clear where the name Shalmai comes from. The Masoretes pointed this name as if it came from the verb שמל (sml), meaning to envelop:
But before the Masoretes did their pointing (and Shalmai was spelled the same as the non-existing name Salmai, or even the existing name Shelomi — all these pronunciations and transliterations are of course guesses as we have no sound recording from Biblical times), our name would have looked like it came from the cluster of words that also gave us the familiar noun שלום (shalom), meaning peace:
The letter י (yod) upon which our name ends, may either create an adjective (peace-like), a possessive form (my peace), or may be a remnant of יה (Yah), which is short for יהוה, which is the name YHWH, or Yahweh.
For a meaning of the name Shalmai, both NOBSE Study Bible Name List and Jones' Dictionary of Old Testament Proper Names take the core of it from the peace-root שלם (shalem), and ascribe the final י (yod) to a remnant of the name of the Lord. NOBSE, however, takes the meaning of recompensation for the core, and reads Yahweh Is Recompenser. Jones sticks with peace, but feels free to associate our name to an offering: Peace Offering Of The Lord. BDB Theological Dictionary does not offer an interpretation of this name and does not list it under any particular root.