Definition 1 of 1
That dark green color thing that you step on while walking on the road and wipe it off your chappals on the footpath stone etc.
Cow saani is used for auspicious purposes like mixing it with water and washing house entrance. Also dry saani is burnt for manufacturing the holy vibhoothi
Also kosu baththis like Tortoise are made from saani.
Saravana: Ada aama! I stepped on it outside my house. I thought I wiped it clean. Karumam da! It is still sticking there.