However, "rye" is not a common grain in Tamil cuisine. So, it's more likely you'd find it referred to as:
* ரொட்டி மாவu (rotti maavu) - This literally means "bread flour" and is a general term for flour used to make bread.
* ரஸ்க் மாவu (rusk maavu) - This refers to "rusk flour", which is often made from rye.
It's best to clarify the context when asking for rye flour in Tamil. For example:
* "ரொட்டி செய்ய ரவை மாவu வேணும்" (Rotti seiya rava maavu venum) - "I need rye flour to make bread"
* "ரஸ்க் செய்ய ரவை மாவu வேணும்" (Rusk seiya rava maavu venum) - "I need rye flour to make rusks"
This will ensure that you get the right type of flour.