Jambudvip (also Jambudweep) is a principal continent in Jain cosmology. Here’s the simple, authentic picture:

• What it is: One of the seven continents (dvipas) described in Jain scriptures, forming the southern part of the cosmic globe around Mount Meru. It is the main landmass where humans and many Jain traditions place much of their ancient history.
• Name meaning: “Jambu” refers to the jambu (rose-apple) tree, so Jambudvip means the land where Jambu trees grow.
• In Jain tradition: Bharatavarsha (the Indian subcontinent) is traditionally described as part of Jambudvip. The continent is said to contain many cities and regions, and it is central to stories of tirthankaras and Jain history.
• Distinct from modern geography: This is a cosmological map, not a literal map of Earth as we know today. It describes a spiritual and symbolic geography that ancient Jain texts use to teach ethics, renunciation, and the path to liberation.

Notes:

• Both Digambar and Shwetambar traditions affirm the basic outline of Jambudvip, though there are differences in certain textual details and the names of places within it.

If you’d like, I can share a brief, traditional Arth (meaning) of a relevant Jain verse or stotra that mentions Jambudvip, or point you to a JainKnowledge page that discusses Jambudvip in more depth.