Boyd’s Bible Dictionary:

(desolation). (1) A duke of Edom (Gen. 36:13,1713And these are the sons of Reuel; Nahath, and Zerah, Shammah, and Mizzah: these were the sons of Bashemath Esau's wife. (Genesis 36:13)
17And these are the sons of Reuel Esau's son; duke Nahath, duke Zerah, duke Shammah, duke Mizzah: these are the dukes that came of Reuel in the land of Edom; these are the sons of Bashemath Esau's wife. (Genesis 36:17)
; 1 Chron. 1:3737The sons of Reuel; Nahath, Zerah, Shammah, and Mizzah. (1 Chronicles 1:37)). (2) Third son of Jesse (1 Sam. 16:9; 17:139Then Jesse made Shammah to pass by. And he said, Neither hath the Lord chosen this. (1 Samuel 16:9)
13And the three eldest sons of Jesse went and followed Saul to the battle: and the names of his three sons that went to the battle were Eliab the firstborn, and next unto him Abinadab, and the third Shammah. (1 Samuel 17:13)
). Called also, Shimea, Shimeah, and Shimma. (3) One of the three greatest of David’s mighty men (2 Sam. 23:11-17,3311And after him was Shammah the son of Agee the Hararite. And the Philistines were gathered together into a troop, where was a piece of ground full of lentiles: and the people fled from the Philistines. 12But he stood in the midst of the ground, and defended it, and slew the Philistines: and the Lord wrought a great victory. 13And three of the thirty chief went down, and came to David in the harvest time unto the cave of Adullam: and the troop of the Philistines pitched in the valley of Rephaim. 14And David was then in an hold, and the garrison of the Philistines was then in Bethlehem. 15And David longed, and said, Oh that one would give me drink of the water of the well of Bethlehem, which is by the gate! 16And the three mighty men brake through the host of the Philistines, and drew water out of the well of Bethlehem, that was by the gate, and took it, and brought it to David: nevertheless he would not drink thereof, but poured it out unto the Lord. 17And he said, Be it far from me, O Lord, that I should do this: is not this the blood of the men that went in jeopardy of their lives? therefore he would not drink it. These things did these three mighty men. (2 Samuel 23:11‑17)
33Shammah the Hararite, Ahiam the son of Sharar the Hararite, (2 Samuel 23:33)
). (4) Another of David’s mighty men (2 Sam. 23:2525Shammah the Harodite, Elika the Harodite, (2 Samuel 23:25)). Shammoth (1 Chron. 11:2727Shammoth the Harorite, Helez the Pelonite, (1 Chronicles 11:27)). Shamhuth (1 Chron. 27:88The fifth captain for the fifth month was Shamhuth the Izrahite: and in his course were twenty and four thousand. (1 Chronicles 27:8)).

Concise Bible Dictionary:

Jackson’s Dictionary of Scripture Proper Names:

desolation: appalment