An Ammonitess was a woman of Ammonite descent. Naamah, the mother of Rehoboam, is specifically called an Ammonitess.
Definition
An Ammonitess was a woman of Ammonite descent. The biblical example specifically identified in the supplied material is Naamah, the mother of Rehoboam.
Biblical Usage
Naamah is called an Ammonitess in the records of Rehoboam’s family and reign.
Historical Background
The term identifies a woman by her connection with the Ammonite people.
Historical Bible Dictionaries
Smith's Bible Dictionary
a woman of Ammonite race. (1 Kings 14:21,31; 2 Chronicles 12:13)
International Standard Bible Encyclopedia (ISBE)
<p>am-on-i'-tes, a-mon'-i-tes (`ammonith): A woman of the Ammonites, Naamah, the mother of Rehoboam (1Ki 14:21,31; 2Ch 12:13; 24:26).</p>