SB 10.12.22
आस्तृतायाममार्गोऽयं रसनां प्रतिगर्जति ।
एषामन्तर्गतं ध्वान्तमेतदप्यन्तराननम् ॥ २२ ॥
āstṛtāyāma-mārgo 'yaṁ
rasanāṁ pratigarjati
eṣāṁ antar-gataṁ dhvāntam
etad apy antar-ānanam
SYNONYMS

āstṛta-āyāma—the length and breadth; mārgaḥ ayam—a broad way; rasanām—the tongue; pratigarjati—resembles; eṣām antaḥ-gatam—on the inside of the mountains; dhvāntam—darkness; etat—this; api—indeed; antaḥ-ānanam—the inside of the mouth.

TRANSLATION

In length and breadth the animal's tongue resembles a broad traffic-way, and the inside of its mouth is very, very dark, like a cave in a mountain.