Is there any specific or particular one word terrm for Interlocking the fingers of both hands?

There isn't a single, universally recognized one-word term for interlocking the fingers of both hands.

However, you could use descriptive terms like:

* Interlace

* Clasp

* Entwine

* Link

* Weave

These words all convey the act of interlocking fingers, but they might not be specific enough for your needs. The best choice depends on the context of your writing.