Natyashastra
विवर्तनं समुद्वृत्तं निष्क्रामः प्राकृतं तथा । पुटान्तर्मण्डलावृत्तिस्तारयोर्भ्रमणं स्मृतम् ॥ ९९॥
Vivartana, (turning sideways), Samudvṛtta (raising up), Niṣkrama (going out) and Prākṛta (natural). Bhramaṇa (moving round)—turning round the eyeballs at random.
english translation
vivartanaM samudvRttaM niSkrAmaH prAkRtaM tathA । puTAntarmaNDalAvRttistArayorbhramaNaM smRtam ॥ 99॥
hk transliteration by Sanscript