Nahash

A king, in the time of the United Monarchy · Ammon · named in 3 verses

Nahash, the king of the Ammonites, besieged Jabesh Gilead and threatened to gouge out the right eyes of its inhabitants.

From Easton's Bible Dictionary

Serpent.

Easton's Illustrated Bible Dictionary, 1897 — public domain, quoted in full and unedited.

First named at 1 Samuel 11:1.

1 Samuel 11:1 Then Nahash the Ammonite came up and laid siege to Jabesh-gilead. All the men of Jabesh said to him, “Make a treaty with us, and we will serve you.”
1 Samuel 11:2 But Nahash the Ammonite replied, “I will make a treaty with you on one condition, that I may put out everyone’s right eye and bring reproach upon all Israel.”
1 Samuel 12:12 But when you saw that Nahash king of the Ammonites was moving against you, you said to me, ‘No, we must have a king to rule over us’—even though the LORD your God was your king.