🔼The name Ahiam in the Bible
The name Ahiam is assigned to only one person in the Bible. He is the son of Sharar the Ararite and one of king David's heroes (2 Samuel 23:33). In 1 Chronicles 11:35 this man's father is called Sacar the Hararite.
🔼Etymology of the name Ahiam
The name Ahiam consists of two elements. The first element is the Hebrew word אח (ah), generally meaning brother:
The second part of the name Ahiam is the word אם (am), meaning mother:
The whole name would thus add up to Brother Of Mother, an equivalent of the word דיד (dod), meaning uncle (or lover/ beloved), from whence possibly came the name David. But the obvious objection to this interpretation is that this name is never used as a regular word. It's more probable that the original name-giver meant to say something like: Friend Of The Mother(-City; -Land).
For a meaning of the name Ahiam, NOBSE Study Bible Name List proposes Mother's Brother. Jones' Dictionary of Old Testament Proper Names seems to either make a bit of an error or ties the possessive yod to the word em, and reads Brother's Mother. This interpretation is not on a par with the meanings of the rest of the Ahi-names. BDB Theological Dictionary doesn't translate this name.