What is pure Tamil word for direction?

There isn't a single, universally accepted pure Tamil word for "direction" in the sense of compass directions (north, south, east, west).

However, there are several Tamil words that can be used depending on the context:

* தெரு (teru): Literally meaning "street," it can also be used to refer to "direction" in a more general sense.

* வழி (vazhi): Means "path" or "way," and can imply a specific direction or route.

* திசை (tisai): While not entirely pure Tamil (it's a Sanskrit loanword), it's widely used to denote compass directions like "north" (வடதிசை), "south" (தென் திசை), etc.

* நெறி (neri): Implies a path or way, but can also refer to the direction of movement or action.

In everyday use, திசை (tisai) is the most common word for "direction." However, the specific word you choose will depend on the context and the nuance you want to convey.