The name Achsah in the Bible
There's only one Achsah in the Bible and she is the daughter of the famous Caleb, the friend of Joshua (Joshua 15:16). Right after conquering Hebron, Caleb wants to take Debir as well. He promises his daughter Achsah to whoever takes the town, and Othniel, son of Kenaz takes on the challenge. He succeeds and subsequently marries Achsah.
Apparently Achsah came with quite a bit of land as well, called Negev. The Negev is known for its dryness and Achsah asks her father for water. Caleb gives her springs known as the upper and lower springs (Joshua 15:19).
Etymology of the name Achsah
The name Achsah comes from the noun עכס (ekes), meaning anklet or bangle:
For a meaning of the name Achsah, both NOBSE Study Bible Name List and Jones' Dictionary of Old Testament Proper Names read Anklet.