Matang Yaksh is a Jain yaksha — a guardian deity associated with a Tirthankar in Jain tradition.

In Jain belief, yakshas and yakshinis are protective attendant deities who serve in a supporting role around the Tirthankars. Matang Yaksh is generally remembered as the yaksha connected with Lord Neminath (Arishtanemi) in many Jain traditions.

Simple meaning:

• Yaksh = protective deity / attendant deity
• Matang = the specific name of that yaksh

He is worshipped in some Jain traditions for protection, devotion, and spiritual support, but in Jain Dharma, the Tirthankar is always the highest object of devotion, not the yaksh.

If you want, I can also explain Matang Yaksh’s iconography, mantra, or association with a specific Tirthankar.