In Jainism, “skhand” is likely referring to “skandha”.

Skandha means a group, cluster, or aggregate of pudgala (matter). It is a collection of material atoms/particles joined together.

Simple meaning:

• One atom/paramanu = smallest unit of matter
• Skandha = many atoms combined together

In Jain philosophy, skandhas are important because pudgala can combine, separate, change, and form different material things.

If you meant a different Jain word, I can explain that too.