आस्तृतायाममार्गो ऽयं रसनां प्रतिगर्जति ।
एषां अन्तर्गतं ध्वान्तम् एतदप्यन्तराननम् ॥ २२ ॥
esam antar-gatam dhvantam
astrta-ayama-the length and breadth; margah ayam-a broad way; rasanam-the tongue; pratigarjati-resembles; esam antah-gatam-on the inside of the mountains; dhvantam-darkness; etat-this; api-indeed; antah-ananam-the inside of the mouth.
In length and breadth the animal's tongue resembles a broad trafficway, and the inside of its mouth is very, very dark, like a cave in a mountain.